day25

I don't really understand what's expected of part2 and the example is
not simple enough for me to step through in my brain so I'm probably not
going to get it.

.cargo/config.toml

@@ -0,0 +1,2 @@
+[build]
+rustflags = ["-Ctarget-cpu=native"]

README.md

@@ -0,0 +1,62 @@
+```
+Advent of code 2020
+Day 1 - Part 1: 1016964
+	generator: 122.086µs,
+	runner: 4.434µs
+
+Day 1 - Part 2: 182588480
+	generator: 99.356µs,
+	runner: 7.318µs
+
+Day 2 - Part 1: 586
+	generator: 233ns,
+	runner: 1.453395ms
+
+Day 2 - Part 2: 352
+	generator: 423ns,
+	runner: 922.764µs
+
+Day 3 - Part 1: 265
+	generator: 964.093µs,
+	runner: 9.734488ms
+
+Day 3 - Part 2: 3154761400
+	generator: 938.153µs,
+	runner: 52.66926ms
+
+Day 4 - Part 2: 186
+	generator: 697ns,
+	runner: 2.760526ms
+
+Day 5 - Part 1: SeatId(933)
+	generator: 489ns,
+	runner: 776.127µs
+
+Day 5 - Part 2: SeatId(711)
+	generator: 443ns,
+	runner: 800.487µs
+
+Day 6 - Part 1: 6633
+	generator: 336ns,
+	runner: 1.669623ms
+
+Day 6 - Part 2: 3202
+	generator: 448ns,
+	runner: 1.538626ms
+
+Day 7 - Part 1: 208
+	generator: 379ns,
+	runner: 6.340596ms
+
+Day 7 - Part 2: 1664
+	generator: 660ns,
+	runner: 5.171311ms
+
+Day 8 - Part 1: 1723
+	generator: 541ns,
+	runner: 564.443µs
+
+Day 8 - Part 2: 846
+	generator: 412ns,
+	runner: 714.064µs
+```

input/2020/day10.txt

@@ -0,0 +1,96 @@
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+2
+53
+140
+4

input/2020/day11.txt

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input/2020/day12.txt

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input/2020/day13.txt

@@ -0,0 +1,2 @@
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input/2020/day14.txt

@@ -0,0 +1,580 @@
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+mem[12489] = 1867
+mem[40021] = 416088
+mem[45893] = 941080
+mask = 010XX0110X0X1XX10X000111101000X101X0
+mem[1347] = 27142438
+mem[56404] = 28056
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+mem[34610] = 408788
+mem[23768] = 4390
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+mem[34140] = 2486
+mem[45229] = 219957
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+mem[63207] = 214605819
+mem[3120] = 975024
+mask = X100000100011XXX00000000110010X0X010
+mem[36039] = 1351
+mem[24280] = 1529
+mem[54240] = 438022
+mem[49990] = 7079087
+mem[21713] = 14792683
+mem[52177] = 1961
+mem[7345] = 406699254
+mask = 1X00010X01X010110X001110100X00101100
+mem[27536] = 12551
+mem[7678] = 10576
+mem[17936] = 1475
+mem[9814] = 99131792
+mem[41885] = 96156
+mem[13120] = 35225
+mask = X111X011000X00X101XX01X10111X1X11010
+mem[60152] = 82433112
+mem[22477] = 4090530
+mem[16768] = 58352433
+mem[7764] = 192408366
+mem[51535] = 69751
+mem[850] = 131
+mem[48467] = 377832323
+mask = 0100001110010010X10X1X111101001100X1
+mem[23672] = 1931
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+mem[12502] = 115896934
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+mask = 0111101100X10X11010X010X0101X00X10X0
+mem[11893] = 62548
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+mem[31032] = 131322
+mask = 0100XX01100X1010010000000X01X0110110
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+mask = 11000X01X1001X0X01X011X00000X0000101
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+mask = 110000011XX1X011X1001101010XXX010X10
+mem[64787] = 469608465
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+mem[19686] = 277550
+mask = 01X0001X1100001X00101110111X1001X000
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+mask = 110X00001101100101000101X1X1X00100X1
+mem[29136] = 3854559
+mem[24118] = 486135
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+mem[5661] = 13272
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+mem[32900] = 7796903
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+mem[8844] = 26023958
+mem[65175] = 81386046
+mem[54410] = 4119058
+mask = X10000X1XX01X01X0100000X1X0001010100
+mem[62976] = 29914819
+mem[7792] = 49702987
+mem[61389] = 124692445
+mem[10004] = 29696422
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+mem[61040] = 199512596
+mask = 0X00XX11110X10X1010101010X0011X00X1X
+mem[10880] = 91763
+mem[93] = 46698
+mask = X100XX111X01001101000X00101000000000
+mem[30458] = 4474263
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+mem[20974] = 20857
+mem[23672] = 853256
+mask = 11000011010XX01101X000XX10111001X11X
+mem[39572] = 24316000
+mem[14981] = 41633461
+mem[41885] = 3807449
+mem[49990] = 31780591
+mem[2414] = 5032671
+mask = 111010XXX110X1010110100001111010X101
+mem[26803] = 474
+mem[15407] = 33070532
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+mask = 01000011XX011011X10XX000X11010000010
+mem[20974] = 101
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+mem[18309] = 8028011
+mem[33984] = 7404765
+mask = 1100X01X01X1101101100011100X01000111
+mem[15864] = 413
+mem[15023] = 7825
+mem[60154] = 451000
+mem[53862] = 240968
+mem[63761] = 5500
+mem[8136] = 5727
+mask = 01000X1XX101001111X00000101X110X0X00
+mem[884] = 1258
+mem[12502] = 150248279
+mem[63] = 1403008

input/2020/day15.txt

@@ -0,0 +1 @@
+1,12,0,20,8,16

input/2020/day16.txt

@@ -0,0 +1,268 @@
+departure location: 25-568 or 594-957
+departure station: 33-447 or 466-952
+departure platform: 31-700 or 725-956
+departure track: 43-124 or 141-952
+departure date: 26-290 or 306-962
+departure time: 34-754 or 763-960
+arrival location: 29-208 or 217-958
+arrival station: 48-118 or 124-973
+arrival platform: 35-368 or 389-972
+arrival track: 47-91 or 106-970
+class: 35-521 or 528-960
+duration: 27-833 or 855-965
+price: 25-870 or 895-957
+route: 31-140 or 146-965
+row: 35-736 or 743-957
+seat: 33-227 or 249-961
+train: 27-763 or 788-961
+type: 34-167 or 193-950
+wagon: 47-437 or 443-952
+zone: 48-928 or 940-955
+
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input/2020/day17.txt

@@ -0,0 +1,8 @@
+#.#.#.##
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input/2020/day18.txt

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+(3 + 9) + ((3 * 2) + 5 + 4 * 8) + 3 * 9 + (3 + 7 + 7 + (5 * 7 * 7 * 9) + 5 * 8) * 5
+3 * 6 + 3 + 7 + (8 + 7) + 7
+6 + (7 + 5 + (2 + 8 + 3 * 4 * 3) + (9 + 6 + 4 * 2)) * 4 + (9 + 9 + 3 + 7 + 4 * 4) + 6 * (9 + (7 * 8 * 2))
+8 + (7 * 6 * 5) + (4 + 3 + 2 + 9) * 6
+6 + 7 * (7 + 3 + 3 + 9 * 2)
+(8 * (4 + 3 + 5 + 9 + 3) * 3 + 3 + (9 * 7 + 9 + 9 + 4 + 7)) * (3 * 3 * 3 + 6 * 9) + 2
+(2 + (4 + 8 + 6 + 9 * 3)) + 2 * 2 * 7
+4 + 5 + ((5 * 7) * 6 + 9 * 4 * 5 * 6) + 6 + 3 * 8
+8 * 7 + 5 + 5
+(3 + (7 * 4 + 3) * 9 + 4 + 7 * 5) + (6 + (3 + 3 * 5) + (6 * 6 * 7))
+4 * 8 * (7 * 7 * 6) + 6 * (2 * 5 + (6 * 4 * 9 + 2 + 5 * 5) * 7 * 5) * (6 * 6 * 7 * 6)
+(4 * 4 + 5 + 9 * 9) + 2 + 2 + 9 * 3 * 5
+((9 + 7 + 6 + 8 + 8) + 4 + 4 * (2 * 5 * 8)) * 4 + 7 * 7 + 4 * (6 + 2 + 7 + 5 * 6)
+9 + 5 + 9 + 3
+4 * 6 * 5 + 3 + (7 * (2 + 5 + 2 * 5 + 9) + (2 + 9 + 8 * 9 + 3 * 3)) * 5
+(3 * 5 * (4 + 2 + 8 + 4 + 7) + 7 * 7) * (6 * 7 + 9 * 7 + 7 + 9)

input/2020/day19.txt

@@ -0,0 +1,562 @@
+72: "b"
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+85: 9 52 | 9 72
+82: 52 87 | 72 77
+133: 52 30 | 72 56
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input/2020/day21.txt

@@ -0,0 +1,38 @@
+pblqsd tdtg rrzf rsbxb mml hgflmgp lsb lxvc mzxmthz mdhvtc sdpssq cdmln zmsn vfmsk slmjgj nvjql hjbq cxsvdm mfpgdr kndg chvtbb gstc hjjg bvqlhhd ggvzz tjlqrg mtnh rpxdc vxqg hvrqsz fqnzvb bkz kktl ppf tlrjcv dsjtkv txdmlzd zbsmv jssz npkdtv vlblq hlkb kpq fpjgdr lzkc lrcxf msfd ftx mptbpz rfdqzf nccr scjsx ncth fqqhkbm qvcr vvptj glf tlls qmnqtm tjlxs bnqbh vgpdr ftxzklk zpcj kqqmg fdzjc ckzc dcrnk cq bbfm xtgghn nnzm (contains soy, fish)
+zpkv qvcr nvq xntsmjqf vqtqp tlls frng rmbn jssz bvqlhhd vsjpsl krlr mtnh fzrmkrdh txdmlzd cjfdvf ghjhv rkd ftxzklk dhlrh mptbpz mgtl tdv qjn gnvmv cq msfd zthtx prgck shc slssgt gn vxdrhp vgpdr fdzjc lrcxf cknhk tmt vlblq fhrc lvfph glf xbnmzr rrvq qmnqtm kvgctt pcjf tjlqrg ftx kktl cmgvvr ggzb stmnld rsbxb vvptj ctmf cdmln prhkvgbh cfvdq hgflmgp vpmfdct zntx (contains soy, eggs, wheat)
+zrt rdtbcz krlr sdst mtdzn vqtqp slssgt dhlrh hghtp lzkc xtgghn qvcr sptc shc nvq mzmpqh ttpxk xzfd fqqhkbm ftx cxsvdm dfgjq cdmln dfdmj kktl lvfph fsxkvv cjfdvf ggvzz hlkb mzcpbs rzmtsz ckzc vfmsk rkd vjlpj bs rsbxb rrzf dmnxl mptbpz vpmfdct nnzm txrtjzx xbnmzr cxsmk tzlx tlrjcv glf mdhvtc gnvmv mchrgcrj pmznfk dkq ppf zpcj zcsmnq mgtl sdpssq mtnh ggzb zplxgb ftxzklk bftd zffkzcp zbblpvfb txdmlzd rfdqzf stbldpp rmxph xntsmjqf (contains dairy, eggs)
+cvptv xhzkj glf tshxt rfdqzf vqtqp lrcxf pblqsd gblh bbfm chvtbb rsbxb mzxmthz zthtx fdzjc prgck cxsmk cjfdvf flcd ckzc vlblq sqmqz ppf rmbn vxgn mptbpz kll kqqmg cmgvvr tdkcd txdmlzd hgflmgp cxsvdm cdmln fhrc xbnmzr tdv vxqg dfdmj hvrqsz vvptj tjlqrg ncth hdbmkt zntx lvfph pcjf bftd dcrnk gn dhjrmdl (contains dairy)
+vfmsk slmjgj cxsvdm nvq vlblq gnvmv cxsmk rl kpq dcrnk tgdk bhhmjbk qmnqtm fsxkvv bftd ggvzz cmgvvr fhrc zcsmnq vsjpsl xtgghn zthtx cjfdvf tlrjcv ftxzklk xbnmzr prgck zbblpvfb bkz frng zntx glf sfxd fdzjc fqnzvb ftx slssgt cknhk qtlnsrq lzkc thbx rrvq sptc xhzkj jzdzmg ggzb rsbxb mgdjxn kqqmg dmnxl mzmpqh dsjtkv fpjgdr txdmlzd mptbpz cfvdq (contains wheat)
+nvq vlblq qvcr rkd rmbn ggzb xtgghn nvjql kslxsfnv mzmpqh fqqhkbm qnbf hgflmgp vxgn vgpdr sfxd cmgvvr zmsn tgdk ttpxk zcsmnq dmnxl stbldpp zpkv qtlnsrq klrnc vpmfdct nnzm tjlqrg pcjf pllr kll jssz ksfgf cxsmk rfdqzf prhkvgbh vvptj ncth nccr vjlpj flcd hjbq xjx cdmln slmjgj hghtp lsb xbnmzr zffkzcp tshxt cvptv ctmf lzkc ldl vfhkmn bkz slssgt txdmlzd mtnh sptc tdkcd dhjrmdl cxsvdm dhlrh rdtbcz lxvc vbsz bhhmjbk cq mptbpz rl vqtqp fdzjc glf zplxgb xzfd gnvmv xhzkj zbblpvfb tlls mgtl hvrqsz (contains peanuts, eggs, sesame)
+msfd fqnzvb tjlqrg ksfgf gfkt zthtx dbds lxvc vgpdr glf zpcj xhzkj mptbpz rrzf krlr slmjgj cfvdq tlls rmxph mzcpbs dfgjq rfdqzf zmsn lrcxf tlrjcv thbx vzcgt lvfph dkq kslxsfnv tdkcd zcsmnq ttpxk kvff flcd mtnh hghtp kktl rmbn gn vlblq xntsmjqf prhkvgbh tjlxs pcjf hjbq bs kvgctt stmnld sn ctmf jgjx rhmpqn kcvgs rl cq vxdrhp pblqsd ggzb shc zntx rsbxb kqqmg cxsvdm txrtjzx hdbmkt dqldvn zbsmv kll txdmlzd jzdzmg klrnc mzmpqh zrt ldnvr nnzm prfjk (contains wheat, dairy)
+kndg jzdzmg txdmlzd ldnvr vqtqp frng cxsvdm fsxkvv rhnd hglq gnvmv thbx bbfm shc zmsn sptc fqqhkbm qsvfj nkv lzkc pk ncth rhmpqn gdpdm bnqbh pcjf mchrgcrj dbds gn zthtx kpq stbldpp dqldvn rrzf mtnh zplxgb vlblq rsbxb mptbpz ncknc ccqpr ksfgf xbnmzr jgjx mzxmthz (contains peanuts, fish, dairy)
+prgck bs kktl vjlpj rhnd gfkt rmxph vjrlml msfd zffkzcp mchrgcrj mptbpz cmgvvr zrt txrtjzx tjlxs kqqmg rdtbcz lzkc hjbq pblqsd sdst xntsmjqf hgflmgp bvqlhhd lsb sn txdmlzd kslxsfnv bkz vfmsk nnzm dhjrmdl sptc gblh vlblq hglq xhzkj rsbxb vsjpsl flcd kvgctt mgdjxn hghtp tjlqrg tdv tlls cxsvdm rfdqzf fqnzvb mtdzn kndg dsjtkv pvg sqmqz mzxmthz gnvmv vzcgt cq ggzb xbnmzr gstc rrvq dkq qmnqtm pmznfk krlr qtlnsrq vbsz lxvc pllr mtnh hdbmkt rl kffdz prfjk kvff jzdzmg qsvfj npkdtv rzmtsz (contains nuts, wheat, fish)
+vxgn rhmpqn glf kqqmg fpjgdr ncknc tzlx kcvgs rl bftd tdtg hjjg xbnmzr rsbxb dhjrmdl xjx ksfgf tgdk jzdzmg dfgjq sn kpq vxdrhp qtlnsrq mchrgcrj krlr cxsvdm mptbpz vxqg cknhk jssz msfd cjfdvf tmt pblqsd ghjhv vfhkmn ttpxk ldnvr zdkxzm mzmpqh npkdtv vgpdr ggzb vjrlml zpkv bvqlhhd bqgjz vfmsk ggvzz tdv pllr vvptj scjsx txdmlzd nvq pcjf hghtp bhhmjbk kvff cq pmznfk pvg tjlxs vlblq ftx chvtbb lsb hgflmgp nxtvs (contains nuts)
+kll flcd nccr tdkcd rpxdc ncth rrvq vlblq cdmln vfmsk krlr txrtjzx hrflzj cblbf tdv kndg mml fqnzvb shc slssgt qtlnsrq vxgn stbldpp ggzb gstc ncknc nxtvs vjlpj txdmlzd cxsvdm bs kvgctt hglq rfdqzf qnbf hvrqsz glf cknhk zntx msfd lrcxf rzsvmj zplxgb zpcj rhmpqn vzcgt xhzkj lsb kvff ghjhv hghtp mchrgcrj zbblpvfb sn qsvfj slmjgj ldl fsxkvv mdhvtc xjx vvptj pllr zbsmv kffdz dqldvn pmznfk frng pk sdpssq rsbxb vgpdr fqqhkbm rmbn bvqlhhd mzxmthz vsjpsl vbsz kqqmg tmt tlrjcv gdpdm xbnmzr mptbpz mgtl (contains nuts, peanuts, fish)
+zpkv mtnh msfd zdkxzm zrt glv kll prhkvgbh rpxdc rfdqzf sn zffkzcp nvjql gblh gstc dhlrh hjbq kndg sqmqz mzmpqh bs vxqg rrzf kvff vbsz vgpdr cknhk sdpssq pcjf mzcpbs vlblq glf cmgvvr fqqhkbm shc stbldpp scjsx vzcgt lxvc lsb hghtp frng txdmlzd mptbpz rsbxb fpjgdr lvfph slmjgj ggzb xzfd cxsvdm tlls mzxmthz vxdrhp (contains sesame, soy)
+kktl tjlqrg jssz rsbxb xzfd gfkt pblqsd tdv ncth dhjrmdl xtgghn pmznfk hjjg rfdqzf dfgjq mzxmthz mgtl bnqbh vxdrhp ppf ckzc lzkc mptbpz qtlnsrq gn prhkvgbh rdtbcz vjrlml qggdgf mtnh bhhmjbk kffdz fzrmkrdh glf vfhkmn pvg cmgvvr kll xbnmzr qmnqtm mtdzn kcvgs dkq dqldvn cxsvdm mml rmxph txdmlzd zpcj nkv vzcgt vbsz kndg nccr fqqhkbm hlkb nvq nnzm rzmtsz (contains eggs)
+mptbpz glf chvtbb dkq xntsmjqf xjx bhhmjbk hgflmgp fpjgdr hvrqsz vfhkmn kndg vzcgt rhnd mgtl thbx rdtbcz rmxph zpkv pllr zbsmv nvjql xbnmzr tjlqrg pvg qggdgf fhrc bftd ckzc pmznfk cblbf mtdzn klrnc hglq kvff zntx mtnh dfgjq bnqbh txdmlzd ftx jgjx vfmsk slssgt frng vgpdr tgdk pblqsd lrcxf xhzkj kpq rl nvq dmnxl tlrjcv hdbmkt pk gnvmv tzlx cxsvdm rhmpqn cjfdvf lzkc qvcr mfpgdr mdhvtc rzsvmj hghtp tmt nxtvs vlblq tdkcd kvgctt ftxzklk vjlpj lvfph rzmtsz vqtqp slmjgj jzdzmg (contains dairy)
+xjx xbnmzr prfjk mgdjxn glf hghtp cxsvdm vlblq mml sn qggdgf vjlpj frng vjrlml mzmpqh lrcxf rsbxb qmnqtm ckzc nccr rzmtsz hjjg hgflmgp stbldpp kvff cfvdq rhmpqn txdmlzd prhkvgbh hjbq prgck gnvmv fqqhkbm qjn stmnld slssgt kslxsfnv mgtl cmgvvr rl tzlx mfpgdr tlls zpkv ttpxk mptbpz ldl dbds kndg vsjpsl vpmfdct kqqmg qnbf mchrgcrj bs bkz flcd ncth ftxzklk cvptv tjlqrg bhhmjbk xhzkj vxgn cxsmk sfxd lsb qvcr zrt nkv sqmqz scjsx (contains dairy, peanuts, wheat)
+mdhvtc tdkcd vlblq xtgghn cfvdq prgck nkv zcsmnq kvff rrzf cq rzsvmj hglq gnvmv mptbpz dcrnk pk nvq hlkb sqmqz xhzkj krlr prfjk tlrjcv cblbf kktl klrnc rpxdc cdmln ldl nccr glv lvfph mtnh kndg vfhkmn dkq ccqpr lzkc rsbxb rdtbcz hgflmgp vjrlml xjx dhlrh glf sdpssq bnqbh cxsvdm dmnxl stbldpp xbnmzr cknhk cmgvvr zthtx (contains sesame)
+hglq nccr mzcpbs tlrjcv slssgt npkdtv ccqpr fdzjc vpmfdct vvptj dhjrmdl tjlqrg ldl ncth mzmpqh fqnzvb flcd fsxkvv glf ctmf rmbn bnqbh rsbxb pcjf dkq dhlrh txrtjzx cxsvdm rl lxvc ttpxk prhkvgbh kvff zrt ggvzz mptbpz klrnc bqgjz msfd rdtbcz fhrc gfkt qmnqtm tlls mchrgcrj kqqmg zbsmv hjjg dfgjq xbnmzr kndg kpq gn zbblpvfb mgtl sqmqz shc sptc zcsmnq ckzc ghjhv mzxmthz qnbf ftx glv qsvfj dqldvn mtnh rmxph xzfd rfdqzf txdmlzd gblh xtgghn ppf nvjql bvqlhhd kktl lsb cblbf tzlx vgpdr krlr (contains peanuts)
+ncth kcvgs sptc cxsvdm fqnzvb mgdjxn ftxzklk ckzc kktl ccqpr tlrjcv txrtjzx kqqmg qnbf bqgjz vzcgt hrflzj kvff slssgt rsbxb mgtl mfpgdr cfvdq scjsx cvptv tshxt bnqbh cblbf glf jgjx xbnmzr vxdrhp xtgghn mzcpbs vjrlml dcrnk ksfgf fsxkvv fdzjc qvcr vbsz gnvmv txdmlzd rrvq npkdtv flcd frng rhmpqn gblh mptbpz vlblq tjlxs ldl (contains wheat, eggs)
+tdkcd kktl cxsmk lrcxf rmxph tgdk vfhkmn dfgjq rzsvmj mptbpz flcd kffdz kcvgs bqgjz cvptv rrzf pllr klrnc kndg zffkzcp sdpssq rl pmznfk xbnmzr lxvc dsjtkv cknhk qnbf mtnh pcjf mtdzn sn tlrjcv kll qsvfj rsbxb krlr tdtg thbx vzcgt qjn tdv ktkbpp mzmpqh vgpdr vlblq ghjhv stbldpp bbfm dhjrmdl pblqsd rhmpqn fqnzvb fdzjc txdmlzd scjsx bhhmjbk gdpdm prgck ncknc bs chvtbb fhrc hghtp hjjg nvq cxsvdm ksfgf cjfdvf ncth (contains peanuts)
+zpkv pmznfk qnbf shc dsjtkv zmsn fdzjc vlblq bs rhnd ttpxk mptbpz kndg mchrgcrj xhzkj txdmlzd cblbf nccr jssz xzfd flcd glv hghtp bbfm hdbmkt tdkcd kcvgs pblqsd vpmfdct gblh kktl mtnh pllr lzkc kvgctt hrflzj ldnvr ftx hlkb vbsz zbblpvfb dfgjq prgck qmnqtm nxtvs ggvzz ldl xbnmzr ftxzklk mfpgdr gnvmv stmnld zntx xjx glf vqtqp frng sdpssq vxdrhp kffdz hglq msfd vzcgt rsbxb cfvdq tzlx rzmtsz kqqmg gn rmbn (contains peanuts, sesame, soy)
+bvqlhhd klrnc ggzb mptbpz dsjtkv qggdgf nxtvs zthtx hrflzj ldl ncth sptc prfjk txdmlzd scjsx zntx zcsmnq shc lsb txrtjzx tlrjcv bqgjz mtnh ldnvr xbnmzr chvtbb gnvmv sqmqz hgflmgp fdzjc zpkv bbfm kktl qvcr vjlpj ftxzklk xntsmjqf prhkvgbh rsbxb vqtqp zrt dmnxl ncknc cxsmk ctmf vlblq glv mdhvtc cxsvdm (contains fish, sesame, peanuts)
+bhhmjbk zplxgb zmsn mzmpqh cq gblh fdzjc pblqsd mtnh dfgjq kffdz jzdzmg vfhkmn mchrgcrj npkdtv pvg tlrjcv rhmpqn cmgvvr pcjf cfvdq lsb kvgctt vxqg tgdk nccr nvq glf gstc nkv txdmlzd qvcr vzcgt txrtjzx ggzb nnzm sptc dsjtkv kslxsfnv zntx dhlrh jgjx vlblq prgck mptbpz thbx ghjhv gfkt lzkc jssz gdpdm rmbn rrvq fqnzvb xbnmzr pmznfk cblbf dbds stmnld mfpgdr kndg slssgt hglq rmxph bvqlhhd ncknc qmnqtm prhkvgbh cxsvdm xtgghn vqtqp rdtbcz pllr qsvfj kqqmg rpxdc hjbq (contains nuts, sesame, soy)
+fhrc kktl fqqhkbm vjlpj zmsn qvcr zffkzcp qggdgf dbds rfdqzf sdpssq zcsmnq kll kvgctt zthtx cjfdvf cxsvdm ksfgf hghtp glf scjsx vfmsk fzrmkrdh bbfm kslxsfnv mtnh gstc rsbxb mptbpz rzmtsz hjbq qnbf vgpdr vzcgt dhjrmdl ggzb ldnvr vsjpsl txdmlzd vlblq ldl shc mzxmthz ncth kffdz mtdzn bnqbh pvg rdtbcz glv rrzf ghjhv gdpdm zbsmv bftd (contains peanuts, wheat)
+xtgghn gnvmv mzxmthz vqtqp rsbxb slssgt zdkxzm rmxph prgck dcrnk txdmlzd kslxsfnv fzrmkrdh zrt vjrlml qtlnsrq dfdmj glf npkdtv lsb pllr tdtg bhhmjbk shc fhrc cblbf mptbpz bftd vbsz vlblq prfjk rkd nkv zffkzcp fpjgdr vxdrhp ldl mzmpqh rhmpqn hglq bs rhnd rl cfvdq xbnmzr jssz kll ncth mdhvtc zpcj tmt ncknc hjjg gstc pblqsd bqgjz mtnh flcd (contains peanuts, nuts)
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+mzmpqh msfd qsvfj lxvc txdmlzd sfxd gstc cdmln bhhmjbk cxsmk xtgghn mtnh rfdqzf dbds ftxzklk zffkzcp mzxmthz vfmsk dmnxl zcsmnq mfpgdr rl mzcpbs rzsvmj bnqbh mgtl tdkcd dqldvn qmnqtm vsjpsl hvrqsz fhrc stmnld rmbn hlkb tzlx vjlpj glf cxsvdm txrtjzx mdhvtc fpjgdr nxtvs krlr bqgjz xbnmzr fsxkvv vvptj gn rzmtsz zmsn jssz pllr vlblq lrcxf nccr gfkt jgjx vgpdr qggdgf ccqpr sn kll zpcj dhlrh slssgt zbblpvfb tjlqrg mptbpz hgflmgp nnzm rhnd mtdzn flcd cknhk tlls nvjql pcjf jzdzmg (contains nuts, sesame, wheat)
+cvptv ctmf glf tlrjcv ktkbpp zpcj vxdrhp cxsmk lsb ghjhv tzlx prfjk bftd rsbxb rpxdc dbds qtlnsrq dqldvn nvjql rhnd xbnmzr nnzm cxsvdm vbsz cfvdq cblbf txdmlzd dkq tdv mptbpz stmnld rrzf kcvgs qjn gfkt slssgt hlkb zpkv slmjgj prhkvgbh hgflmgp fhrc hvrqsz jssz vzcgt ftxzklk hjbq xntsmjqf tlls rmxph zcsmnq cmgvvr rhmpqn ldl dcrnk qggdgf mzmpqh sn vlblq thbx klrnc qnbf rzmtsz fdzjc bs ggzb gblh nvq mgtl pk jgjx dfgjq (contains wheat)
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+tjlqrg stbldpp tlls nvjql vqtqp lsb zntx bnqbh msfd kll klrnc ktkbpp npkdtv fqnzvb cxsvdm ftxzklk sdpssq thbx mtnh fqqhkbm dsjtkv dfgjq vvptj txdmlzd xntsmjqf bftd xjx dcrnk fpjgdr rdtbcz txrtjzx lxvc hrflzj zpkv krlr rsbxb xhzkj zdkxzm vlblq qsvfj mfpgdr zmsn ggzb kpq qtlnsrq rzsvmj hglq sqmqz gdpdm rkd gblh prfjk glf jgjx pk xbnmzr lvfph kndg dkq vxdrhp (contains peanuts)
+zffkzcp vjrlml mfpgdr lvfph sqmqz sptc jgjx msfd hvrqsz lzkc rdtbcz cjfdvf sdst zpcj ghjhv bkz ncth sn ckzc tjlxs fsxkvv ncknc bvqlhhd hjjg kffdz mdhvtc vxdrhp ccqpr tdv glf dsjtkv hgflmgp rfdqzf ttpxk xbnmzr ktkbpp rsbxb vfhkmn stmnld ftxzklk vlblq dhjrmdl pblqsd gdpdm fqqhkbm ftx ksfgf nccr vzcgt mzmpqh nkv nnzm lxvc glv rkd txdmlzd hrflzj vjlpj xtgghn ldnvr qtlnsrq nxtvs zdkxzm dhlrh jssz cxsvdm jzdzmg ppf mzcpbs bftd dfdmj hglq cvptv dmnxl mptbpz zntx xntsmjqf (contains fish, nuts, sesame)
+qnbf tdtg pblqsd tmt gblh ftx qtlnsrq bftd mgtl mzmpqh xbnmzr rpxdc sdst krlr mchrgcrj rsbxb vxdrhp bs ctmf sdpssq glv ggvzz mtnh ppf glf dfdmj dkq nvq dhlrh tlrjcv pmznfk dfgjq gstc mzxmthz zbsmv vxgn fqqhkbm rhmpqn hrflzj lrcxf vvptj vfmsk rhnd slmjgj gnvmv kslxsfnv flcd scjsx rrvq lzkc mfpgdr bhhmjbk pcjf zntx txdmlzd hjbq cjfdvf frng lsb qmnqtm mzcpbs ccqpr cxsvdm mptbpz rdtbcz rrzf nvjql vgpdr (contains wheat, dairy)
+ttpxk dqldvn xtgghn stbldpp tzlx qggdgf qvcr pvg xbnmzr zbsmv zpkv kslxsfnv rmxph vjlpj gdpdm sfxd hghtp vxqg vlblq ktkbpp jgjx klrnc stmnld ftxzklk hvrqsz slssgt cq gnvmv glf kll vqtqp rfdqzf dcrnk zcsmnq bbfm ldl flcd gstc cxsvdm vsjpsl prgck mchrgcrj nvjql hdbmkt sptc mtdzn frng ldnvr nccr dkq fzrmkrdh vgpdr kktl cdmln rsbxb tshxt mtnh kcvgs mptbpz lzkc nnzm rrzf ftx (contains eggs, soy, sesame)
+ccqpr tzlx zpcj mptbpz cjfdvf bkz zrt rdtbcz tmt cxsmk pvg fdzjc lxvc vlblq hvrqsz dhjrmdl msfd dcrnk ttpxk tdtg ftxzklk rsbxb mtnh cxsvdm vbsz fqnzvb xntsmjqf xjx shc dbds qnbf dkq txrtjzx zcsmnq prfjk glf sdpssq nnzm cmgvvr cblbf flcd lsb xhzkj cfvdq lzkc vjrlml rmbn frng gdpdm bs tlls ghjhv nvjql rrzf kktl txdmlzd hjjg zpkv zntx hgflmgp ggvzz dhlrh jzdzmg (contains fish, peanuts, soy)
+kqqmg rfdqzf dfgjq cxsvdm glf sn mzcpbs ktkbpp vxqg mzmpqh ttpxk mzxmthz rsbxb tzlx zplxgb dcrnk zbsmv fdzjc dsjtkv sdpssq kvgctt xhzkj stmnld bnqbh bqgjz tdv stbldpp rhmpqn cq lxvc klrnc mtnh hjjg rkd vlblq gnvmv lsb cdmln dhjrmdl qtlnsrq vjrlml scjsx txdmlzd lzkc mfpgdr dkq tlrjcv xjx chvtbb ghjhv ppf cfvdq kcvgs xzfd kndg nnzm jzdzmg hdbmkt gdpdm kpq rzsvmj mgtl cjfdvf qmnqtm gstc dqldvn qsvfj vfhkmn rrzf zthtx cxsmk mtdzn xbnmzr qjn rmbn hvrqsz bhhmjbk dhlrh ldl flcd vjlpj fsxkvv (contains nuts, fish)
+tlrjcv cxsvdm nccr vsjpsl vfhkmn vlblq xbnmzr prgck frng bhhmjbk zplxgb thbx jssz tdtg lrcxf pvg cjfdvf dmnxl vvptj stbldpp mtnh txrtjzx xzfd zpcj cmgvvr flcd bs qsvfj ggzb gdpdm zdkxzm rpxdc rhmpqn sdst rhnd ftxzklk nnzm fdzjc kndg vjrlml qmnqtm ldl cq cfvdq ttpxk tgdk xhzkj bnqbh fpjgdr lzkc vjlpj ggvzz glf prhkvgbh txdmlzd vxqg mfpgdr mzmpqh tjlqrg kqqmg cxsmk gfkt kvgctt kll mptbpz fqqhkbm xntsmjqf cvptv ftx zbblpvfb xjx qggdgf bqgjz chvtbb (contains soy, dairy, sesame)
+cxsvdm zplxgb mtnh vfmsk ckzc hdbmkt tshxt dmnxl zpcj mtdzn nkv glv vzcgt txdmlzd vxdrhp rsbxb krlr zbblpvfb tdtg ccqpr lvfph nccr sdpssq qtlnsrq prhkvgbh klrnc rhnd mdhvtc bkz vgpdr dsjtkv tlrjcv cfvdq pmznfk dkq vlblq tzlx glf rl rzmtsz ttpxk kvgctt chvtbb nnzm scjsx mptbpz tdkcd xjx jzdzmg zffkzcp npkdtv cdmln tdv bs nvq prgck sptc gn ftx (contains soy)
+ccqpr slssgt gfkt rzmtsz xtgghn prfjk cxsmk xbnmzr ghjhv gnvmv dsjtkv jgjx pllr bvqlhhd hlkb pcjf vfhkmn cq vsjpsl mtnh nvjql stbldpp mml mchrgcrj pvg dfgjq sdpssq shc fqqhkbm tdkcd sqmqz ldl mptbpz scjsx mfpgdr lzkc vlblq hdbmkt glf slmjgj thbx ksfgf dmnxl gn cjfdvf dbds tjlxs mtdzn xhzkj tdtg nxtvs zmsn ggzb xntsmjqf tgdk kslxsfnv zthtx vxgn zbblpvfb tjlqrg xzfd dkq cxsvdm rsbxb bkz vqtqp mzcpbs (contains eggs, soy, dairy)

input/2020/day22.txt

@@ -0,0 +1,53 @@
+Player 1:
+10
+21
+37
+2
+47
+13
+6
+29
+9
+3
+4
+48
+46
+25
+44
+41
+23
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+43
+5
+27
+50
+
+Player 2:
+39
+42
+31
+36
+7
+1
+49
+19
+40
+35
+8
+11
+18
+30
+14
+17
+15
+34
+26
+33
+32
+38
+28
+16
+22

input/2020/day23.txt

@@ -0,0 +1 @@
+459672813

input/2020/day24.txt

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input/2020/day7.txt

@@ -0,0 +1,594 @@
+plaid magenta bags contain 2 clear lavender bags, 3 clear teal bags, 4 vibrant gold bags.
+light teal bags contain 4 drab magenta bags, 2 dull crimson bags, 3 posh brown bags.
+wavy gray bags contain 3 dark aqua bags.
+faded magenta bags contain 3 dark crimson bags, 3 dark violet bags.
+shiny aqua bags contain 1 plaid turquoise bag.
+muted maroon bags contain 2 dim cyan bags.
+pale yellow bags contain 5 dotted black bags, 2 drab silver bags, 3 shiny gold bags.
+dark white bags contain 5 posh salmon bags, 5 wavy brown bags, 4 dark fuchsia bags.
+plaid tomato bags contain 1 posh brown bag, 3 muted white bags, 4 vibrant fuchsia bags, 2 drab magenta bags.
+wavy green bags contain 5 pale brown bags, 3 plaid turquoise bags, 2 mirrored maroon bags.
+posh tomato bags contain 5 mirrored white bags, 1 shiny lavender bag.
+vibrant silver bags contain 4 dotted lavender bags, 3 wavy green bags, 1 striped yellow bag, 4 muted plum bags.
+mirrored cyan bags contain 1 faded plum bag, 5 dull purple bags.
+bright yellow bags contain 1 clear yellow bag, 3 muted indigo bags.
+shiny plum bags contain 3 shiny teal bags, 3 wavy gray bags.
+striped gold bags contain 1 dull plum bag, 2 dark crimson bags, 4 bright lime bags, 2 vibrant teal bags.
+faded black bags contain 3 faded bronze bags.
+dim white bags contain 5 striped turquoise bags, 4 muted yellow bags, 4 shiny crimson bags.
+light bronze bags contain 5 bright plum bags.
+vibrant maroon bags contain 3 dim beige bags, 4 drab blue bags.
+vibrant lime bags contain 2 pale cyan bags.
+striped fuchsia bags contain 1 vibrant bronze bag, 3 shiny lavender bags.
+mirrored indigo bags contain 4 dim gray bags.
+posh bronze bags contain 5 muted coral bags, 2 pale orange bags.
+drab coral bags contain no other bags.
+mirrored violet bags contain 2 dotted purple bags, 2 posh green bags.
+dotted lime bags contain 3 dull fuchsia bags, 4 plaid fuchsia bags, 4 pale gray bags, 3 drab fuchsia bags.
+dull gray bags contain 4 bright brown bags, 5 dark blue bags, 4 dull cyan bags, 1 dark violet bag.
+posh indigo bags contain 1 faded teal bag, 3 dark cyan bags.
+shiny orange bags contain 3 mirrored green bags, 5 dim tomato bags.
+faded lime bags contain 5 vibrant olive bags.
+dim magenta bags contain 3 vibrant green bags, 1 vibrant olive bag.
+light salmon bags contain 1 dim turquoise bag, 1 muted tomato bag, 4 bright black bags, 5 posh yellow bags.
+bright bronze bags contain 4 pale black bags, 2 mirrored maroon bags.
+striped yellow bags contain 5 mirrored red bags, 3 light tan bags, 4 vibrant teal bags.
+dark teal bags contain 5 posh yellow bags, 4 dull plum bags, 3 muted plum bags, 5 mirrored beige bags.
+plaid green bags contain 4 mirrored yellow bags, 4 dark aqua bags, 2 muted gray bags.
+bright red bags contain 2 faded olive bags, 5 drab olive bags, 1 striped lime bag.
+light plum bags contain 2 pale coral bags.
+muted yellow bags contain no other bags.
+wavy yellow bags contain 3 posh plum bags, 2 dotted chartreuse bags, 4 dotted magenta bags.
+drab brown bags contain 2 clear blue bags.
+posh purple bags contain 4 light coral bags, 1 dim aqua bag.
+faded brown bags contain 2 faded salmon bags, 5 striped crimson bags.
+dark blue bags contain 4 pale brown bags, 1 mirrored gray bag.
+mirrored gold bags contain 2 wavy gold bags, 4 muted gray bags, 5 drab olive bags.
+muted tomato bags contain 1 bright violet bag, 5 pale plum bags, 5 light plum bags.
+wavy tomato bags contain 4 dim beige bags, 5 faded orange bags.
+clear aqua bags contain 1 dull lime bag, 1 clear violet bag, 2 dim tan bags, 3 bright gray bags.
+clear violet bags contain 4 posh brown bags, 2 striped fuchsia bags.
+plaid yellow bags contain 1 pale fuchsia bag, 1 mirrored purple bag, 4 faded purple bags.
+muted lime bags contain 3 dotted lavender bags, 1 faded turquoise bag, 1 plaid chartreuse bag.
+bright orange bags contain 1 shiny aqua bag, 2 mirrored salmon bags, 3 posh red bags.
+pale cyan bags contain 3 dim orange bags, 4 drab lavender bags, 2 bright coral bags, 5 light white bags.
+dark magenta bags contain 5 dull salmon bags, 1 drab cyan bag, 1 dotted maroon bag, 1 dim tomato bag.
+plaid chartreuse bags contain 5 dotted orange bags, 2 vibrant maroon bags, 1 dotted lavender bag.
+dotted tomato bags contain 2 muted bronze bags, 1 dark magenta bag.
+muted tan bags contain 2 plaid tan bags.
+posh magenta bags contain 2 vibrant red bags, 4 muted gray bags, 2 vibrant maroon bags.
+bright purple bags contain 4 bright gray bags, 2 plaid tomato bags.
+drab chartreuse bags contain 1 light blue bag, 3 drab gray bags, 1 dim tan bag, 5 posh crimson bags.
+shiny white bags contain 5 dull beige bags.
+bright cyan bags contain 4 shiny tomato bags, 1 muted lavender bag.
+faded blue bags contain 3 vibrant aqua bags, 3 muted orange bags.
+light cyan bags contain 4 mirrored magenta bags, 1 dotted turquoise bag.
+wavy salmon bags contain 3 clear tan bags, 1 dull bronze bag.
+pale indigo bags contain 2 faded blue bags, 2 pale yellow bags, 5 dim tomato bags, 5 dark coral bags.
+pale olive bags contain 5 muted olive bags, 4 dim olive bags, 5 clear violet bags.
+shiny brown bags contain 1 dark green bag, 3 vibrant olive bags, 1 wavy indigo bag.
+shiny coral bags contain 5 bright violet bags.
+posh plum bags contain 3 pale coral bags, 1 dull green bag, 1 plaid cyan bag, 4 shiny orange bags.
+shiny silver bags contain 3 dotted brown bags, 3 bright tomato bags, 2 posh tomato bags.
+wavy gold bags contain 1 bright gray bag, 1 shiny fuchsia bag.
+vibrant yellow bags contain 2 posh lavender bags, 1 pale purple bag, 5 muted plum bags, 3 faded chartreuse bags.
+drab blue bags contain 4 drab silver bags, 4 bright plum bags.
+vibrant turquoise bags contain 2 bright maroon bags.
+pale violet bags contain 5 faded violet bags.
+dark bronze bags contain 4 faded indigo bags, 5 muted yellow bags.
+drab gray bags contain no other bags.
+shiny violet bags contain 2 bright lime bags, 5 dull magenta bags.
+striped tomato bags contain 1 wavy indigo bag, 5 shiny coral bags, 5 vibrant bronze bags.
+dull yellow bags contain 3 muted teal bags, 1 dim green bag, 4 pale brown bags.
+shiny lime bags contain 5 muted yellow bags, 1 drab gray bag, 2 faded yellow bags, 1 pale magenta bag.
+vibrant tan bags contain 1 vibrant lime bag, 1 drab blue bag, 5 dark maroon bags.
+wavy coral bags contain 1 clear gold bag, 2 drab tan bags, 1 plaid magenta bag, 2 pale lime bags.
+bright beige bags contain 3 bright violet bags.
+dim silver bags contain 4 bright plum bags.
+plaid beige bags contain 4 dotted turquoise bags, 5 shiny salmon bags, 2 pale red bags.
+light blue bags contain no other bags.
+wavy brown bags contain 4 light yellow bags, 1 dark coral bag, 2 dark olive bags, 4 vibrant teal bags.
+pale gray bags contain 5 faded cyan bags, 2 shiny lime bags, 3 striped blue bags, 5 drab purple bags.
+vibrant white bags contain 3 drab gray bags, 4 faded blue bags, 2 clear white bags, 1 dull tan bag.
+light lime bags contain 3 muted white bags, 2 dark fuchsia bags.
+dark yellow bags contain 3 vibrant maroon bags.
+vibrant indigo bags contain 4 dark olive bags, 5 light purple bags.
+faded yellow bags contain 1 posh brown bag, 2 light blue bags, 4 mirrored teal bags, 1 dull crimson bag.
+mirrored bronze bags contain 3 bright black bags, 4 faded blue bags, 3 striped salmon bags, 4 mirrored olive bags.
+pale chartreuse bags contain 3 dim aqua bags, 4 mirrored lime bags.
+plaid gray bags contain 1 vibrant aqua bag.
+pale fuchsia bags contain 5 wavy yellow bags, 3 dotted brown bags, 3 muted black bags, 1 dotted turquoise bag.
+vibrant olive bags contain 1 faded tan bag, 3 drab silver bags, 4 muted brown bags, 2 faded blue bags.
+dotted olive bags contain 3 plaid gold bags, 5 mirrored salmon bags, 2 dim magenta bags.
+muted purple bags contain 2 muted magenta bags.
+dim teal bags contain 2 dotted maroon bags.
+mirrored red bags contain 3 dim tan bags, 5 clear black bags, 3 faded violet bags, 1 mirrored olive bag.
+dark lime bags contain 3 mirrored violet bags.
+shiny beige bags contain 1 dim yellow bag, 2 mirrored coral bags, 2 bright salmon bags, 5 vibrant brown bags.
+dim gold bags contain 1 shiny gold bag.
+mirrored maroon bags contain 1 faded blue bag.
+shiny olive bags contain 5 plaid olive bags, 3 muted silver bags.
+wavy purple bags contain 3 dim cyan bags, 2 dotted white bags, 4 dark coral bags.
+drab fuchsia bags contain 4 dull gold bags, 3 muted yellow bags, 4 muted orange bags, 4 faded fuchsia bags.
+drab beige bags contain 2 plaid olive bags.
+vibrant coral bags contain 3 mirrored cyan bags.
+dull salmon bags contain 2 shiny gold bags.
+light chartreuse bags contain 3 plaid cyan bags.
+striped silver bags contain 3 shiny violet bags, 3 dark blue bags.
+dark indigo bags contain 3 light beige bags, 3 wavy white bags, 2 light black bags, 4 striped silver bags.
+dotted orange bags contain 2 dull bronze bags, 3 vibrant red bags, 5 dull gold bags, 3 shiny yellow bags.
+dotted fuchsia bags contain 1 vibrant cyan bag, 4 dotted crimson bags.
+shiny turquoise bags contain 1 dark aqua bag, 4 dark cyan bags.
+posh beige bags contain 1 shiny purple bag.
+shiny tan bags contain 2 bright violet bags, 5 faded orange bags, 2 mirrored cyan bags.
+faded maroon bags contain 1 dark red bag, 1 mirrored red bag.
+clear tomato bags contain 4 mirrored teal bags, 2 posh turquoise bags.
+pale beige bags contain 2 pale salmon bags, 5 dark teal bags, 4 shiny chartreuse bags, 5 striped green bags.
+dull red bags contain 1 pale plum bag.
+striped salmon bags contain 4 drab cyan bags, 5 light yellow bags, 4 vibrant orange bags, 4 dark gold bags.
+dull lavender bags contain 3 pale blue bags, 5 clear blue bags.
+dim red bags contain 3 vibrant bronze bags, 3 dotted gray bags.
+light orange bags contain 2 plaid teal bags, 2 dull brown bags, 3 dark brown bags.
+dotted silver bags contain 1 vibrant yellow bag, 4 pale lime bags, 4 pale crimson bags.
+mirrored gray bags contain 1 dark coral bag, 2 mirrored crimson bags, 3 light yellow bags, 5 dull crimson bags.
+light black bags contain 1 drab tan bag, 3 drab lavender bags.
+plaid purple bags contain 4 clear tan bags, 3 dim yellow bags.
+mirrored tan bags contain 2 dark olive bags, 4 clear violet bags, 5 wavy salmon bags.
+dark silver bags contain 3 shiny silver bags, 3 dark lime bags.
+dark violet bags contain 3 faded violet bags, 1 dull plum bag, 1 drab silver bag, 1 pale purple bag.
+drab magenta bags contain 1 dark aqua bag, 2 muted maroon bags, 5 drab green bags.
+pale green bags contain 5 posh red bags, 1 light fuchsia bag, 2 dotted chartreuse bags.
+mirrored beige bags contain 4 vibrant turquoise bags, 4 muted yellow bags, 5 faded cyan bags, 2 drab purple bags.
+striped aqua bags contain 4 clear black bags, 3 striped indigo bags.
+mirrored crimson bags contain 2 dull gold bags, 5 wavy blue bags, 2 bright plum bags, 4 shiny yellow bags.
+striped crimson bags contain 3 clear blue bags.
+muted lavender bags contain 1 drab coral bag, 2 dull gold bags, 2 posh crimson bags, 1 mirrored green bag.
+light tomato bags contain 3 dull black bags, 5 posh white bags.
+pale tan bags contain 1 clear yellow bag, 2 vibrant aqua bags, 1 wavy red bag, 2 drab chartreuse bags.
+dotted plum bags contain 4 shiny tomato bags, 1 mirrored olive bag, 2 posh turquoise bags, 1 faded bronze bag.
+vibrant bronze bags contain 1 vibrant aqua bag.
+clear tan bags contain 5 vibrant aqua bags, 1 drab coral bag, 4 muted lavender bags, 1 muted orange bag.
+dark beige bags contain 5 dull green bags, 5 clear violet bags, 1 pale coral bag, 3 pale silver bags.
+wavy plum bags contain 4 light teal bags, 4 shiny aqua bags, 2 light olive bags, 4 light blue bags.
+striped turquoise bags contain 2 pale salmon bags, 3 muted orange bags, 3 posh lavender bags.
+mirrored turquoise bags contain 3 vibrant lavender bags.
+clear gray bags contain 3 dark cyan bags, 2 mirrored red bags, 2 wavy teal bags.
+wavy violet bags contain 1 dark fuchsia bag.
+clear crimson bags contain 1 pale red bag.
+faded purple bags contain 1 shiny black bag, 2 mirrored white bags.
+bright white bags contain 5 dotted maroon bags, 1 wavy aqua bag.
+pale bronze bags contain 5 dull teal bags.
+bright teal bags contain 1 mirrored aqua bag, 5 drab fuchsia bags.
+posh silver bags contain 5 dim gray bags, 5 vibrant beige bags, 2 muted green bags.
+posh chartreuse bags contain 3 pale brown bags.
+dotted purple bags contain 5 faded indigo bags, 4 drab magenta bags, 5 shiny chartreuse bags, 3 faded maroon bags.
+dim fuchsia bags contain 3 light blue bags, 3 muted yellow bags.
+dark coral bags contain 4 dull crimson bags, 3 muted brown bags.
+faded crimson bags contain 1 muted teal bag.
+mirrored orange bags contain 3 dull bronze bags, 5 dull gold bags, 4 dim gray bags, 1 dotted green bag.
+faded aqua bags contain 1 light gray bag.
+vibrant magenta bags contain 1 dark aqua bag.
+light fuchsia bags contain 4 light orange bags, 5 muted chartreuse bags, 3 wavy tomato bags, 1 dotted violet bag.
+light coral bags contain 5 plaid tan bags.
+dim lavender bags contain 1 pale purple bag.
+shiny gray bags contain 5 shiny purple bags, 5 vibrant green bags, 1 bright cyan bag, 5 light blue bags.
+dim turquoise bags contain no other bags.
+wavy turquoise bags contain 1 light white bag, 4 posh magenta bags, 5 dim magenta bags.
+dim salmon bags contain 5 faded violet bags, 1 faded lime bag.
+wavy bronze bags contain 4 plaid magenta bags.
+clear black bags contain 1 shiny lavender bag.
+striped magenta bags contain 5 shiny cyan bags, 3 dotted purple bags, 4 striped silver bags, 3 light coral bags.
+striped gray bags contain 3 faded plum bags, 2 striped fuchsia bags, 1 dim gray bag.
+wavy cyan bags contain 1 striped indigo bag.
+faded fuchsia bags contain 2 striped fuchsia bags.
+plaid blue bags contain 2 dark brown bags, 5 drab gray bags, 5 plaid olive bags, 1 dark aqua bag.
+pale red bags contain 5 clear aqua bags, 2 dim turquoise bags, 5 drab gray bags, 4 faded turquoise bags.
+dim tan bags contain no other bags.
+wavy fuchsia bags contain 2 dull lime bags, 1 drab fuchsia bag, 3 drab indigo bags.
+drab gold bags contain 4 bright salmon bags, 2 shiny fuchsia bags, 4 faded lime bags, 5 plaid magenta bags.
+pale lavender bags contain 1 wavy beige bag, 2 striped olive bags.
+muted olive bags contain 5 striped fuchsia bags, 1 drab silver bag, 3 dotted lavender bags.
+shiny magenta bags contain 3 clear orange bags, 2 plaid silver bags, 5 bright turquoise bags, 4 shiny orange bags.
+muted blue bags contain 3 dark gray bags, 3 drab blue bags, 4 dark gold bags, 5 bright tomato bags.
+dotted red bags contain 4 striped plum bags, 5 shiny aqua bags, 2 clear red bags.
+vibrant tomato bags contain 3 wavy white bags, 1 mirrored lime bag, 1 dark fuchsia bag.
+dull silver bags contain 4 posh black bags, 3 dark gray bags, 3 pale plum bags.
+dark chartreuse bags contain 3 dull blue bags, 1 dim tan bag.
+clear gold bags contain 3 muted magenta bags, 3 dim teal bags, 4 vibrant olive bags, 1 vibrant salmon bag.
+posh teal bags contain 4 wavy red bags.
+pale blue bags contain 1 dim red bag, 4 clear silver bags, 2 dull salmon bags, 4 vibrant salmon bags.
+dotted gray bags contain 4 vibrant bronze bags, 4 dark maroon bags, 4 muted lavender bags.
+dotted magenta bags contain 2 dull purple bags, 4 dim gold bags, 5 drab gray bags, 4 faded bronze bags.
+faded gold bags contain 2 clear black bags, 3 pale tomato bags, 3 wavy aqua bags.
+light turquoise bags contain 2 bright tan bags, 2 muted chartreuse bags.
+muted green bags contain 4 muted gold bags, 4 posh black bags, 1 striped fuchsia bag, 1 dotted blue bag.
+light beige bags contain 5 muted olive bags.
+striped brown bags contain 4 bright white bags, 1 pale teal bag.
+vibrant blue bags contain 4 clear aqua bags, 2 striped green bags, 1 faded indigo bag.
+dim purple bags contain 4 bright coral bags, 2 posh yellow bags.
+dim aqua bags contain 3 faded plum bags, 2 dim red bags.
+clear salmon bags contain 2 drab gray bags, 1 mirrored cyan bag.
+plaid tan bags contain 5 muted yellow bags, 1 bright brown bag.
+striped green bags contain 2 drab cyan bags, 5 dim gray bags.
+dark gray bags contain 3 muted teal bags, 1 clear violet bag, 5 bright cyan bags.
+clear lavender bags contain 1 dark red bag, 1 wavy blue bag, 2 plaid silver bags.
+vibrant gold bags contain 5 dark brown bags.
+drab indigo bags contain 3 wavy aqua bags, 3 mirrored indigo bags, 5 dull brown bags.
+light white bags contain 2 dull plum bags, 2 drab orange bags.
+posh orange bags contain 4 wavy plum bags, 2 posh tan bags, 1 bright blue bag, 4 muted red bags.
+drab red bags contain 2 mirrored maroon bags, 4 light coral bags.
+muted silver bags contain 5 muted maroon bags, 3 clear fuchsia bags, 3 dark gold bags.
+plaid olive bags contain 1 posh red bag, 1 pale crimson bag, 5 shiny tomato bags.
+light tan bags contain 1 dull bronze bag, 2 dim lavender bags.
+plaid white bags contain 3 dim turquoise bags.
+pale aqua bags contain 1 vibrant crimson bag, 3 striped silver bags, 3 bright lavender bags, 3 shiny white bags.
+bright tomato bags contain 5 drab purple bags, 1 shiny black bag, 4 wavy turquoise bags.
+dotted green bags contain 3 dim cyan bags, 4 faded violet bags.
+faded silver bags contain 1 shiny violet bag, 5 faded lavender bags.
+vibrant cyan bags contain 1 bright green bag, 4 muted teal bags, 3 clear salmon bags.
+mirrored blue bags contain 2 muted teal bags, 4 posh crimson bags, 2 dim indigo bags, 1 clear black bag.
+faded olive bags contain 3 faded fuchsia bags, 3 dotted maroon bags, 5 wavy red bags, 4 plaid chartreuse bags.
+striped lavender bags contain 2 vibrant salmon bags, 5 bright black bags, 5 dull blue bags.
+bright green bags contain 2 muted maroon bags, 3 dim orange bags.
+striped teal bags contain 4 light brown bags, 5 plaid brown bags, 4 clear turquoise bags.
+posh yellow bags contain 1 pale teal bag, 5 dark crimson bags.
+clear cyan bags contain 1 muted silver bag, 5 shiny white bags, 4 dotted white bags, 2 striped fuchsia bags.
+drab tan bags contain 3 vibrant bronze bags, 1 pale white bag.
+muted chartreuse bags contain 1 clear white bag, 1 shiny violet bag, 5 bright fuchsia bags.
+drab aqua bags contain 3 mirrored tan bags.
+vibrant gray bags contain 2 mirrored salmon bags, 3 dotted brown bags, 3 wavy maroon bags, 4 shiny maroon bags.
+faded teal bags contain 2 drab gray bags, 1 dim gold bag, 4 drab orange bags, 5 clear violet bags.
+wavy red bags contain 4 drab coral bags, 4 dotted lavender bags, 5 dim turquoise bags.
+dull white bags contain 3 mirrored green bags, 5 dim turquoise bags.
+dotted chartreuse bags contain 1 dotted green bag, 4 dull blue bags, 1 striped indigo bag, 5 dim tomato bags.
+posh maroon bags contain 2 dull salmon bags, 5 clear bronze bags, 5 bright cyan bags, 5 clear silver bags.
+faded white bags contain 4 drab gray bags, 4 dim gray bags.
+striped black bags contain 1 bright salmon bag, 3 faded white bags, 3 dark magenta bags, 1 muted plum bag.
+striped indigo bags contain 3 shiny tomato bags, 2 mirrored olive bags.
+striped white bags contain 4 vibrant maroon bags.
+dim gray bags contain 2 dull gold bags.
+faded coral bags contain 5 mirrored lavender bags, 2 vibrant plum bags.
+mirrored tomato bags contain 5 light yellow bags, 2 drab orange bags.
+dotted tan bags contain 2 posh plum bags, 2 pale teal bags, 2 pale maroon bags.
+dotted turquoise bags contain 5 mirrored crimson bags, 2 dull orange bags.
+dim yellow bags contain 2 bright cyan bags, 3 dim turquoise bags, 2 mirrored green bags.
+vibrant crimson bags contain 5 posh maroon bags.
+pale crimson bags contain 4 clear black bags, 5 dull crimson bags, 5 dotted green bags.
+light indigo bags contain 3 clear black bags.
+plaid cyan bags contain 3 plaid tan bags, 3 drab coral bags.
+drab bronze bags contain 5 dull teal bags, 3 plaid coral bags, 2 faded beige bags, 4 plaid aqua bags.
+drab orange bags contain 1 mirrored green bag.
+mirrored lime bags contain 1 shiny gray bag, 3 dim indigo bags.
+posh aqua bags contain 4 muted tan bags, 2 faded yellow bags.
+light purple bags contain 2 shiny chartreuse bags, 2 dim gray bags, 5 pale red bags.
+dull teal bags contain 3 posh crimson bags, 1 dotted blue bag, 3 muted yellow bags.
+vibrant red bags contain 4 faded white bags, 5 dim tan bags, 4 shiny lavender bags, 1 dim turquoise bag.
+dull cyan bags contain 1 dotted silver bag, 5 striped olive bags, 5 faded gray bags, 1 dark green bag.
+dim crimson bags contain 1 posh lime bag, 1 dark salmon bag.
+light violet bags contain 5 posh brown bags.
+clear orange bags contain 2 light olive bags, 4 faded turquoise bags, 4 drab gray bags, 2 mirrored olive bags.
+dotted crimson bags contain 4 pale magenta bags, 5 muted red bags, 4 shiny yellow bags.
+posh gray bags contain 4 dull lavender bags, 4 dim gray bags.
+faded tomato bags contain 3 striped salmon bags, 1 bright lime bag, 4 vibrant magenta bags.
+clear bronze bags contain 5 bright plum bags, 1 dim beige bag, 1 dim cyan bag, 5 dotted blue bags.
+clear fuchsia bags contain 3 vibrant olive bags, 3 pale crimson bags, 4 wavy maroon bags, 4 drab olive bags.
+bright violet bags contain 3 faded blue bags.
+muted brown bags contain 1 muted lavender bag.
+faded turquoise bags contain 3 dull gold bags, 3 muted orange bags, 4 light blue bags, 1 dotted gray bag.
+dim indigo bags contain 5 muted maroon bags.
+plaid black bags contain 4 plaid teal bags, 5 vibrant green bags.
+dull purple bags contain 2 shiny gold bags, 4 dim gray bags.
+dull crimson bags contain 1 dull gold bag, 4 vibrant aqua bags.
+light aqua bags contain 5 mirrored orange bags, 4 wavy aqua bags.
+pale lime bags contain 4 drab coral bags, 3 vibrant chartreuse bags, 4 posh crimson bags.
+faded plum bags contain 1 muted brown bag, 4 dull bronze bags, 1 plaid white bag, 1 drab blue bag.
+clear silver bags contain 4 muted gray bags, 5 mirrored maroon bags, 1 clear violet bag.
+light brown bags contain 4 shiny maroon bags, 1 drab lavender bag, 5 dark violet bags, 4 dull green bags.
+light crimson bags contain 4 light magenta bags, 3 mirrored blue bags, 1 pale tomato bag, 1 muted tomato bag.
+plaid orange bags contain 4 dull silver bags.
+muted black bags contain 2 dull tomato bags, 5 mirrored teal bags.
+dotted bronze bags contain 4 dim tan bags.
+drab tomato bags contain 4 muted lime bags, 2 striped cyan bags.
+clear indigo bags contain 5 dull lavender bags, 4 dark indigo bags.
+pale purple bags contain 5 dim beige bags, 5 shiny tomato bags, 3 mirrored olive bags, 5 muted lavender bags.
+mirrored silver bags contain 4 vibrant maroon bags.
+bright aqua bags contain 5 bright olive bags, 2 drab magenta bags, 2 dim teal bags.
+wavy magenta bags contain 3 clear fuchsia bags, 3 mirrored gray bags, 4 dull fuchsia bags.
+dull blue bags contain 5 drab coral bags, 5 drab chartreuse bags.
+dim plum bags contain 1 muted magenta bag, 3 shiny lavender bags.
+muted bronze bags contain 3 posh white bags, 5 clear black bags, 3 mirrored lime bags.
+drab cyan bags contain 1 drab blue bag.
+faded tan bags contain 4 pale plum bags.
+posh violet bags contain 2 dim silver bags.
+posh blue bags contain 5 clear yellow bags, 3 light indigo bags.
+muted orange bags contain 5 drab gray bags, 1 dim turquoise bag.
+bright lavender bags contain 1 drab cyan bag.
+clear brown bags contain 2 shiny teal bags.
+light maroon bags contain 4 dim fuchsia bags, 1 light yellow bag, 3 pale magenta bags.
+muted indigo bags contain 4 shiny gold bags, 1 clear teal bag, 4 light gray bags, 2 shiny orange bags.
+striped red bags contain 4 wavy blue bags, 1 vibrant maroon bag, 5 shiny yellow bags.
+drab olive bags contain 2 dull blue bags, 5 pale coral bags, 1 vibrant salmon bag, 1 dotted green bag.
+dotted aqua bags contain 5 dim aqua bags, 1 drab olive bag, 5 dim violet bags, 2 light plum bags.
+dull indigo bags contain 5 vibrant gold bags.
+drab turquoise bags contain 3 pale salmon bags, 1 shiny violet bag, 1 shiny orange bag, 1 mirrored olive bag.
+bright turquoise bags contain 1 dotted green bag.
+bright tan bags contain 5 faded cyan bags, 5 mirrored aqua bags, 3 dim orange bags.
+bright chartreuse bags contain 1 dim bronze bag, 3 posh bronze bags, 3 drab salmon bags.
+vibrant orange bags contain 3 dim fuchsia bags, 3 dull crimson bags, 5 vibrant salmon bags.
+bright lime bags contain 3 posh tomato bags, 4 striped indigo bags, 1 dull white bag, 2 light plum bags.
+dark black bags contain 1 muted aqua bag.
+pale silver bags contain 2 dull fuchsia bags, 2 dark maroon bags.
+dotted maroon bags contain 2 drab olive bags.
+shiny gold bags contain 2 dim beige bags, 1 dark maroon bag, 4 light blue bags.
+posh lime bags contain 1 shiny green bag, 3 drab purple bags, 3 vibrant blue bags.
+vibrant violet bags contain 5 dim silver bags, 4 dotted maroon bags, 5 drab fuchsia bags, 5 clear plum bags.
+bright silver bags contain 2 drab coral bags, 5 mirrored red bags, 5 drab fuchsia bags.
+dark purple bags contain 1 drab chartreuse bag, 1 posh lavender bag, 1 clear blue bag.
+light green bags contain 1 dark plum bag, 5 dull olive bags, 4 shiny lavender bags.
+dull beige bags contain 5 light indigo bags.
+muted gold bags contain 2 mirrored magenta bags, 5 shiny orange bags, 5 drab lavender bags.
+plaid gold bags contain 4 dark crimson bags, 3 dotted crimson bags.
+plaid silver bags contain 2 dotted blue bags, 1 vibrant aqua bag, 2 shiny chartreuse bags.
+vibrant green bags contain 5 posh brown bags, 3 light gray bags, 2 wavy blue bags.
+posh crimson bags contain 2 dim turquoise bags, 3 dim tan bags, 4 dotted lavender bags.
+bright coral bags contain 1 faded chartreuse bag.
+shiny teal bags contain 2 muted orange bags, 5 muted olive bags, 5 mirrored olive bags.
+posh brown bags contain 4 posh crimson bags.
+pale white bags contain 5 dark coral bags, 3 dim tomato bags, 3 wavy indigo bags.
+clear olive bags contain 1 bright plum bag.
+dotted violet bags contain 3 posh plum bags.
+vibrant salmon bags contain 3 dim beige bags, 2 light gray bags, 2 wavy red bags, 5 dull brown bags.
+dotted indigo bags contain 1 dull maroon bag.
+clear lime bags contain 5 posh maroon bags, 1 muted coral bag, 5 wavy maroon bags, 3 muted orange bags.
+posh cyan bags contain 3 posh black bags, 4 drab black bags.
+striped blue bags contain 5 dim yellow bags, 1 wavy chartreuse bag.
+dark cyan bags contain 1 faded blue bag.
+clear magenta bags contain 3 muted green bags, 5 dotted aqua bags, 2 posh gray bags.
+dull lime bags contain 4 dotted lavender bags, 3 dim cyan bags, 4 dim tan bags.
+pale brown bags contain 3 dim gray bags.
+dull violet bags contain 2 posh tomato bags, 2 clear blue bags, 2 drab silver bags, 4 muted gray bags.
+dark tan bags contain 2 dim cyan bags, 4 dotted lavender bags.
+dotted black bags contain 3 plaid olive bags, 3 posh plum bags, 3 wavy turquoise bags, 5 muted teal bags.
+muted cyan bags contain 2 shiny tan bags, 1 bright aqua bag, 4 dotted lavender bags, 3 vibrant crimson bags.
+clear green bags contain 1 dotted violet bag, 3 dotted bronze bags, 1 clear bronze bag.
+bright olive bags contain 4 muted orange bags, 3 dotted orange bags.
+dull turquoise bags contain 1 faded lavender bag, 5 dark blue bags, 3 striped cyan bags.
+mirrored plum bags contain 5 dull violet bags, 3 faded turquoise bags.
+plaid lavender bags contain 2 striped green bags, 2 posh magenta bags, 3 drab cyan bags, 3 bright plum bags.
+clear yellow bags contain 1 mirrored green bag, 2 dotted blue bags.
+light gold bags contain 3 dark blue bags.
+dark gold bags contain 1 light aqua bag.
+drab crimson bags contain 2 posh coral bags, 1 shiny red bag.
+faded chartreuse bags contain 2 vibrant red bags, 4 vibrant aqua bags, 5 pale purple bags, 5 mirrored olive bags.
+bright plum bags contain 2 pale tan bags.
+muted crimson bags contain 3 dotted orange bags, 4 bright orange bags, 3 drab maroon bags, 2 vibrant turquoise bags.
+dim black bags contain 3 shiny green bags, 5 mirrored gold bags, 2 wavy fuchsia bags.
+pale gold bags contain 2 wavy silver bags, 3 muted magenta bags.
+wavy black bags contain 2 dim beige bags, 1 clear bronze bag, 5 shiny gray bags.
+dim green bags contain 1 wavy maroon bag.
+dull tomato bags contain 4 mirrored red bags, 1 dark violet bag, 2 posh magenta bags, 1 light indigo bag.
+clear beige bags contain 1 posh coral bag, 4 dim silver bags, 1 wavy turquoise bag, 4 bright white bags.
+posh red bags contain 5 dim cyan bags.
+dark turquoise bags contain 1 dark cyan bag, 3 light blue bags.
+clear maroon bags contain 2 mirrored white bags, 5 dull plum bags, 3 dull beige bags.
+light silver bags contain 4 shiny violet bags, 4 posh indigo bags, 1 wavy white bag.
+muted salmon bags contain 3 dim lime bags, 2 shiny violet bags, 2 dark green bags, 1 mirrored chartreuse bag.
+muted plum bags contain 3 bright coral bags, 5 posh indigo bags, 4 bright gray bags.
+dim orange bags contain 5 mirrored brown bags, 4 dim turquoise bags.
+light gray bags contain 2 light blue bags, 2 pale purple bags.
+mirrored magenta bags contain 5 pale coral bags, 1 dark crimson bag.
+drab lavender bags contain 3 clear yellow bags.
+striped tan bags contain 1 dotted black bag, 1 dull crimson bag.
+wavy aqua bags contain 1 muted teal bag.
+light olive bags contain 4 drab magenta bags.
+bright indigo bags contain 1 mirrored gray bag, 4 vibrant red bags, 3 dim tomato bags.
+dotted yellow bags contain 1 drab olive bag, 4 pale crimson bags, 4 drab gray bags, 2 striped fuchsia bags.
+mirrored lavender bags contain 3 drab coral bags, 3 dim indigo bags, 4 dim gold bags, 5 wavy salmon bags.
+muted white bags contain 5 bright brown bags, 5 bright plum bags, 1 dull gold bag.
+posh fuchsia bags contain 3 dotted aqua bags.
+dotted brown bags contain 4 dim turquoise bags, 1 dotted gray bag, 3 dark magenta bags, 2 bright coral bags.
+shiny bronze bags contain 4 mirrored indigo bags, 2 wavy turquoise bags, 2 wavy blue bags, 3 mirrored beige bags.
+vibrant teal bags contain 1 dark violet bag, 3 wavy blue bags, 1 dull fuchsia bag.
+plaid indigo bags contain 4 vibrant magenta bags, 2 dull cyan bags.
+muted turquoise bags contain 5 dark magenta bags, 5 drab gray bags, 4 plaid red bags.
+striped bronze bags contain 5 bright white bags, 2 clear bronze bags, 3 bright silver bags.
+posh salmon bags contain 4 drab maroon bags, 3 mirrored bronze bags, 4 faded plum bags.
+light magenta bags contain 5 dark purple bags, 3 plaid silver bags.
+dull fuchsia bags contain 3 posh red bags, 4 dark coral bags, 2 dark aqua bags.
+vibrant aqua bags contain 3 drab coral bags, 3 dim cyan bags, 5 dim tan bags.
+muted red bags contain 3 plaid teal bags, 1 posh coral bag, 3 posh plum bags.
+drab yellow bags contain 3 bright brown bags, 3 mirrored aqua bags.
+dim cyan bags contain no other bags.
+shiny yellow bags contain 4 wavy red bags, 2 dotted blue bags.
+bright maroon bags contain 4 drab gray bags, 1 mirrored olive bag, 5 faded white bags.
+dark crimson bags contain 4 drab orange bags, 5 vibrant red bags, 1 pale purple bag.
+shiny cyan bags contain 4 faded plum bags, 4 faded teal bags, 1 posh indigo bag.
+posh olive bags contain 1 dark tan bag, 1 drab green bag, 5 pale cyan bags, 4 vibrant turquoise bags.
+dull chartreuse bags contain 3 shiny chartreuse bags, 3 striped brown bags, 2 mirrored blue bags, 3 pale coral bags.
+dim bronze bags contain 4 muted olive bags.
+faded orange bags contain 2 vibrant red bags.
+dim violet bags contain 1 posh red bag, 5 plaid tan bags.
+wavy indigo bags contain 2 bright olive bags, 3 shiny red bags, 4 clear blue bags.
+dull coral bags contain 4 faded magenta bags, 1 plaid lime bag, 2 dotted red bags.
+dotted white bags contain 2 mirrored purple bags, 4 faded cyan bags, 1 vibrant salmon bag.
+shiny crimson bags contain 5 mirrored magenta bags, 2 plaid silver bags, 3 vibrant brown bags, 2 vibrant orange bags.
+bright magenta bags contain 1 light silver bag, 1 striped salmon bag, 4 dark gold bags, 5 faded lime bags.
+dotted salmon bags contain 5 dim purple bags, 4 dull indigo bags, 2 pale turquoise bags.
+clear purple bags contain 2 clear coral bags, 2 muted green bags, 5 clear maroon bags.
+mirrored purple bags contain 4 drab silver bags, 1 wavy aqua bag, 1 shiny teal bag.
+wavy teal bags contain 5 dull salmon bags, 2 bright coral bags, 2 bright plum bags.
+shiny red bags contain 4 dull indigo bags, 4 pale coral bags, 3 wavy blue bags.
+wavy tan bags contain 5 faded turquoise bags, 2 posh tomato bags, 4 dark green bags, 4 dull crimson bags.
+wavy crimson bags contain 3 vibrant gold bags, 3 drab magenta bags, 3 dull salmon bags.
+wavy olive bags contain 2 pale blue bags, 1 dull gold bag, 3 clear aqua bags, 1 mirrored gray bag.
+shiny salmon bags contain 2 mirrored aqua bags, 3 mirrored tan bags, 1 wavy blue bag.
+dark plum bags contain 1 faded salmon bag, 1 faded plum bag, 3 pale tan bags.
+mirrored yellow bags contain 3 clear lime bags.
+dark lavender bags contain 5 muted teal bags, 5 shiny bronze bags.
+pale tomato bags contain 2 clear silver bags, 3 shiny green bags, 2 mirrored blue bags, 4 vibrant beige bags.
+dotted cyan bags contain 4 light gray bags.
+wavy silver bags contain 4 drab teal bags, 5 vibrant maroon bags, 4 wavy teal bags, 4 striped turquoise bags.
+vibrant brown bags contain 5 striped gray bags, 1 bright turquoise bag.
+mirrored salmon bags contain 1 bright salmon bag, 4 drab lavender bags.
+striped violet bags contain 5 drab teal bags.
+bright gold bags contain 4 clear blue bags, 2 dull gray bags, 1 striped red bag, 5 muted indigo bags.
+faded cyan bags contain 5 dark green bags.
+plaid fuchsia bags contain 2 posh blue bags.
+posh green bags contain 4 striped cyan bags, 2 bright lime bags, 1 dotted black bag, 5 dim silver bags.
+dull plum bags contain 4 striped fuchsia bags.
+dull brown bags contain 1 faded bronze bag, 5 posh tomato bags, 1 muted gray bag.
+dull aqua bags contain 1 light blue bag, 1 vibrant bronze bag, 1 posh brown bag.
+clear plum bags contain 4 clear silver bags, 2 bright beige bags, 5 mirrored red bags, 2 dull magenta bags.
+dull orange bags contain 1 light blue bag, 5 shiny maroon bags.
+wavy maroon bags contain 3 dotted gray bags, 3 faded indigo bags, 3 dim cyan bags.
+plaid teal bags contain 2 dotted blue bags, 5 vibrant olive bags, 5 faded orange bags.
+muted gray bags contain 1 dim tan bag, 1 shiny tomato bag, 3 vibrant bronze bags, 1 drab coral bag.
+plaid aqua bags contain 3 mirrored tan bags, 2 mirrored green bags, 2 dark gray bags, 4 dotted blue bags.
+striped beige bags contain 4 clear salmon bags.
+faded beige bags contain 4 vibrant red bags, 3 pale tan bags.
+pale salmon bags contain 3 mirrored chartreuse bags, 3 striped salmon bags, 4 faded blue bags.
+plaid turquoise bags contain 3 shiny lavender bags, 3 faded beige bags.
+muted fuchsia bags contain 3 muted indigo bags, 3 vibrant red bags, 4 dim lavender bags, 4 dull teal bags.
+drab black bags contain 5 dark beige bags, 3 mirrored olive bags, 3 faded turquoise bags.
+shiny fuchsia bags contain 3 muted brown bags, 4 dim beige bags.
+shiny maroon bags contain 2 dark bronze bags, 2 bright salmon bags, 5 striped cyan bags.
+shiny lavender bags contain 3 muted orange bags, 1 bright plum bag, 5 muted lavender bags.
+bright gray bags contain 1 plaid tan bag, 2 dotted gray bags.
+striped purple bags contain 5 posh black bags, 2 striped fuchsia bags, 3 mirrored magenta bags, 3 dark tan bags.
+faded red bags contain 5 posh coral bags, 3 dim silver bags, 2 bright black bags, 3 muted green bags.
+dim blue bags contain 5 drab purple bags.
+dotted gold bags contain 5 pale coral bags, 5 dim bronze bags.
+bright crimson bags contain 2 clear purple bags, 2 plaid yellow bags, 4 muted fuchsia bags.
+dull gold bags contain no other bags.
+mirrored teal bags contain 4 wavy maroon bags, 1 faded magenta bag, 2 wavy teal bags, 2 vibrant salmon bags.
+dotted lavender bags contain no other bags.
+muted aqua bags contain 4 muted tan bags.
+vibrant black bags contain 3 plaid white bags.
+pale maroon bags contain 3 dotted cyan bags, 4 posh brown bags, 1 bright salmon bag.
+dark maroon bags contain 1 shiny tomato bag, 2 mirrored white bags, 2 posh red bags.
+pale magenta bags contain 4 vibrant red bags, 3 bright cyan bags.
+posh lavender bags contain 5 dim silver bags, 3 striped indigo bags, 3 muted gray bags, 3 dull violet bags.
+striped chartreuse bags contain 2 shiny chartreuse bags, 5 drab gray bags, 2 dotted brown bags, 1 plaid coral bag.
+muted teal bags contain 5 clear black bags, 1 light white bag, 4 posh crimson bags, 4 faded beige bags.
+mirrored chartreuse bags contain 1 bright silver bag, 1 light plum bag, 2 drab purple bags.
+dim lime bags contain 1 dotted gray bag, 4 muted olive bags, 2 muted gray bags.
+drab violet bags contain 1 plaid fuchsia bag, 4 dull white bags, 3 posh beige bags.
+bright fuchsia bags contain 1 pale turquoise bag, 5 dotted cyan bags.
+striped lime bags contain 3 light blue bags, 4 drab fuchsia bags, 5 light aqua bags, 1 dim indigo bag.
+wavy lavender bags contain 4 dull violet bags.
+drab maroon bags contain 1 pale brown bag, 1 pale purple bag.
+clear chartreuse bags contain 4 faded fuchsia bags, 2 light gray bags, 3 vibrant maroon bags, 3 posh lavender bags.
+clear teal bags contain 1 faded teal bag, 4 muted white bags.
+dull black bags contain 1 pale blue bag, 2 shiny green bags, 3 plaid plum bags, 2 faded turquoise bags.
+dark olive bags contain 1 faded tan bag, 3 dim beige bags, 4 dark chartreuse bags, 5 light yellow bags.
+faded green bags contain 4 striped green bags, 5 dotted blue bags, 3 striped beige bags.
+drab green bags contain 1 clear aqua bag, 4 light plum bags.
+mirrored green bags contain no other bags.
+posh black bags contain 4 striped cyan bags, 2 dim tan bags, 5 drab blue bags, 5 faded white bags.
+muted magenta bags contain 2 vibrant aqua bags.
+mirrored brown bags contain 4 wavy turquoise bags, 1 dull magenta bag, 1 dim silver bag, 2 dim gray bags.
+plaid brown bags contain 5 mirrored brown bags, 4 mirrored lime bags, 1 clear red bag.
+posh white bags contain 5 clear bronze bags, 5 faded maroon bags, 3 light lavender bags.
+posh turquoise bags contain 1 pale tan bag, 1 dark purple bag, 4 shiny white bags, 2 drab brown bags.
+dim brown bags contain 2 drab coral bags.
+plaid violet bags contain 4 clear lavender bags, 4 drab maroon bags, 4 muted maroon bags, 1 bright red bag.
+posh coral bags contain 1 shiny gold bag, 4 dim red bags, 5 dull aqua bags.
+bright black bags contain 2 dull teal bags.
+plaid bronze bags contain 1 bright orange bag, 5 wavy turquoise bags, 5 vibrant beige bags.
+drab plum bags contain 2 bright lime bags.
+shiny green bags contain 5 wavy blue bags, 4 bright lime bags.
+drab teal bags contain 1 wavy aqua bag, 2 mirrored gray bags, 5 dim lavender bags.
+bright blue bags contain 4 muted purple bags, 3 bright fuchsia bags, 5 muted maroon bags.
+shiny chartreuse bags contain 2 clear violet bags, 3 posh coral bags, 2 drab chartreuse bags, 2 pale silver bags.
+faded lavender bags contain 5 dim lavender bags, 1 dim turquoise bag, 1 vibrant magenta bag.
+dim coral bags contain 3 faded teal bags, 3 faded indigo bags.
+striped maroon bags contain 1 shiny aqua bag, 3 vibrant magenta bags, 5 light maroon bags, 2 dull aqua bags.
+striped plum bags contain 1 dotted brown bag, 3 wavy green bags, 2 mirrored tomato bags.
+drab lime bags contain 2 wavy teal bags, 3 dim maroon bags, 1 dark cyan bag.
+muted coral bags contain 4 dim maroon bags, 5 drab lavender bags, 5 drab purple bags.
+drab white bags contain 3 shiny cyan bags, 5 wavy aqua bags, 5 faded maroon bags.
+dotted teal bags contain 3 muted indigo bags.
+plaid coral bags contain 4 dotted aqua bags, 4 wavy salmon bags, 2 dim maroon bags.
+bright salmon bags contain 5 dark cyan bags.
+shiny blue bags contain 1 posh lime bag.
+plaid red bags contain 1 dim maroon bag, 4 faded crimson bags, 2 muted plum bags.
+dull olive bags contain 2 faded plum bags, 4 striped white bags, 4 wavy indigo bags.
+shiny purple bags contain 2 drab coral bags, 5 pale blue bags.
+striped olive bags contain 2 vibrant orange bags, 5 dim red bags, 1 dim cyan bag, 3 mirrored cyan bags.
+dull magenta bags contain 2 vibrant yellow bags.
+dull tan bags contain 2 mirrored green bags, 5 muted yellow bags, 4 faded turquoise bags.
+vibrant plum bags contain 3 shiny olive bags, 1 dim indigo bag.
+mirrored black bags contain 3 posh black bags, 4 vibrant tan bags, 1 vibrant black bag, 2 posh orange bags.
+shiny black bags contain 3 muted white bags, 1 dim maroon bag, 2 dull salmon bags.
+clear red bags contain 4 muted gray bags.
+striped cyan bags contain 4 posh chartreuse bags, 4 dull brown bags, 2 posh tomato bags, 3 dark crimson bags.
+faded violet bags contain 1 drab chartreuse bag, 1 dim turquoise bag, 2 mirrored olive bags, 2 clear tan bags.
+muted beige bags contain 2 bright silver bags, 5 bright gold bags, 4 pale brown bags, 2 bright bronze bags.
+pale black bags contain 5 vibrant green bags, 3 dark coral bags.
+vibrant purple bags contain 4 dark brown bags, 3 clear violet bags, 1 wavy black bag, 2 faded fuchsia bags.
+dark fuchsia bags contain 1 wavy salmon bag.
+dark aqua bags contain 5 vibrant aqua bags, 5 dull blue bags.
+pale coral bags contain 3 mirrored olive bags, 5 faded blue bags, 3 dim beige bags.
+striped coral bags contain 4 shiny fuchsia bags, 1 plaid brown bag, 2 bright turquoise bags, 1 vibrant blue bag.
+pale turquoise bags contain 3 dull green bags, 1 dim red bag.
+pale teal bags contain 3 mirrored green bags, 1 faded violet bag, 3 vibrant green bags.
+wavy beige bags contain 1 bright tomato bag, 2 dull olive bags, 3 dotted violet bags.
+dark orange bags contain 2 posh salmon bags, 1 clear bronze bag.
+shiny tomato bags contain 5 drab orange bags, 3 dull crimson bags, 4 clear tan bags, 5 faded blue bags.
+mirrored fuchsia bags contain 2 bright maroon bags, 2 dim beige bags, 3 muted gold bags, 4 striped brown bags.
+clear coral bags contain 5 dim brown bags, 1 drab lavender bag, 3 dull lime bags.
+clear white bags contain 2 clear violet bags, 5 dull beige bags, 3 vibrant aqua bags, 4 dull blue bags.
+dull maroon bags contain 5 dim salmon bags, 4 dim silver bags, 3 dark magenta bags.
+drab silver bags contain 5 faded blue bags, 5 wavy chartreuse bags, 5 dull crimson bags, 5 muted yellow bags.
+faded salmon bags contain 4 wavy olive bags, 3 mirrored salmon bags, 1 plaid violet bag.
+drab salmon bags contain 4 dull magenta bags, 5 muted teal bags.
+light yellow bags contain 1 pale coral bag, 4 dim turquoise bags, 4 mirrored maroon bags.
+plaid crimson bags contain 3 dark violet bags, 2 dull gray bags.
+dark tomato bags contain 1 posh teal bag, 1 posh lavender bag, 5 dim cyan bags, 4 light yellow bags.
+dim chartreuse bags contain 5 muted plum bags, 4 vibrant aqua bags.
+mirrored white bags contain 5 dull gold bags, 5 muted lavender bags, 2 dull crimson bags.
+dotted blue bags contain 3 muted orange bags.
+mirrored olive bags contain 5 posh crimson bags, 3 faded blue bags.
+dim maroon bags contain 5 wavy aqua bags, 5 faded violet bags, 2 dull crimson bags, 2 posh lavender bags.
+shiny indigo bags contain 5 dull lavender bags, 1 light white bag.
+wavy chartreuse bags contain 3 mirrored white bags, 2 drab chartreuse bags, 5 muted orange bags, 4 dull crimson bags.
+striped orange bags contain 4 shiny salmon bags.
+dull green bags contain 4 muted gray bags, 4 drab gray bags, 3 clear yellow bags.
+pale orange bags contain 5 posh turquoise bags, 3 light beige bags, 3 bright aqua bags, 5 dim bronze bags.
+dim tomato bags contain 3 bright brown bags.
+dull bronze bags contain 1 bright plum bag, 3 wavy red bags, 2 drab silver bags.
+wavy blue bags contain 3 dull crimson bags, 4 light blue bags.
+clear blue bags contain 1 dim gold bag, 4 dark crimson bags, 2 light gray bags, 4 muted olive bags.
+clear turquoise bags contain 1 muted lime bag, 2 faded turquoise bags, 4 plaid lavender bags.
+dark brown bags contain 3 dull gold bags, 5 bright cyan bags, 2 dull brown bags, 3 dark aqua bags.
+plaid lime bags contain 3 dotted purple bags, 1 plaid blue bag, 3 bright silver bags, 1 vibrant chartreuse bag.
+mirrored coral bags contain 2 plaid olive bags.
+vibrant fuchsia bags contain 3 light indigo bags.
+dim beige bags contain 1 muted lavender bag, 3 light blue bags.
+wavy orange bags contain 5 dotted teal bags, 3 dull magenta bags, 4 clear chartreuse bags, 5 shiny violet bags.
+vibrant lavender bags contain 3 vibrant orange bags, 1 dark aqua bag.
+mirrored aqua bags contain 4 drab blue bags.
+faded gray bags contain 1 wavy blue bag, 2 vibrant yellow bags, 1 light magenta bag.
+dark green bags contain 2 wavy red bags.
+dark red bags contain 5 drab magenta bags, 3 bright lime bags.
+dark salmon bags contain 2 striped indigo bags, 5 wavy lavender bags, 1 dim fuchsia bag, 5 dim yellow bags.
+wavy lime bags contain 2 striped plum bags, 3 faded brown bags.
+muted violet bags contain 1 faded tomato bag.
+faded bronze bags contain 2 dim gray bags, 3 muted gray bags.
+vibrant beige bags contain 5 striped brown bags, 5 dull lime bags.
+dotted coral bags contain 4 shiny brown bags, 1 bright silver bag, 2 clear yellow bags.
+plaid maroon bags contain 3 shiny magenta bags, 3 faded tomato bags.
+dim olive bags contain 3 light brown bags.
+pale plum bags contain 4 pale tan bags, 1 drab silver bag, 3 dim beige bags.
+vibrant chartreuse bags contain 4 mirrored white bags, 2 muted orange bags, 2 posh magenta bags.
+faded indigo bags contain 3 bright brown bags, 3 dim tomato bags.
+posh gold bags contain 3 dark silver bags, 4 mirrored gray bags, 4 dark salmon bags, 1 dim white bag.
+light lavender bags contain 2 dark cyan bags.
+plaid salmon bags contain 2 dotted green bags, 4 shiny indigo bags, 5 bright brown bags.
+wavy white bags contain 2 dim lavender bags, 3 faded teal bags, 2 dull tan bags, 3 drab orange bags.
+plaid plum bags contain 1 vibrant yellow bag.
+posh tan bags contain 2 dull orange bags, 4 pale violet bags, 2 shiny brown bags.
+light red bags contain 4 dim maroon bags, 4 faded salmon bags, 5 plaid purple bags.
+dotted beige bags contain 2 shiny fuchsia bags, 3 faded cyan bags, 5 mirrored red bags, 3 drab turquoise bags.
+drab purple bags contain 3 bright cyan bags, 1 faded bronze bag, 3 light plum bags, 1 dull fuchsia bag.
+bright brown bags contain 2 dotted green bags, 4 clear tan bags, 3 wavy red bags.

input/2020/day8.txt

@@ -0,0 +1,653 @@
+acc +9
+acc -2
+acc -12
+acc +33
+jmp +301
+nop +508
+jmp +216
+acc +27
+acc +35
+acc +43
+acc +31
+jmp +309
+acc +18
+acc -19
+acc +7
+jmp +44
+acc -13
+acc -17
+acc +31
+jmp +311
+nop +612
+jmp +143
+acc +22
+nop +85
+jmp +458
+acc -3
+jmp +13
+acc -19
+acc +27
+acc +12
+jmp +483
+acc +40
+acc +6
+jmp +128
+jmp +10
+acc +0
+acc -3
+acc -2
+jmp -11
+acc +43
+acc -12
+jmp +158
+acc +0
+jmp +240
+jmp +1
+acc +5
+acc +15
+jmp +187
+nop +563
+jmp +51
+acc -16
+jmp +158
+jmp +322
+acc +47
+nop -1
+jmp +299
+acc +26
+acc +25
+jmp +232
+jmp -9
+acc +15
+jmp +54
+jmp +558
+acc +7
+acc -7
+jmp +399
+nop +447
+jmp +71
+acc +26
+acc +46
+jmp +145
+acc +38
+acc +30
+acc +21
+jmp +263
+acc +10
+jmp +168
+acc +22
+nop +561
+jmp -26
+jmp +1
+acc -7
+jmp -5
+acc +28
+acc -6
+jmp +370
+jmp +94
+acc +50
+acc +42
+acc -9
+acc +30
+jmp +70
+acc +29
+jmp +166
+acc -5
+acc -18
+nop +84
+acc +2
+jmp +366
+jmp -40
+acc -4
+acc -15
+acc -1
+jmp +169
+jmp +1
+acc -4
+acc +0
+jmp -45
+nop -21
+nop +241
+acc -18
+acc +19
+jmp +26
+nop -51
+jmp +260
+acc +17
+jmp +428
+acc +6
+jmp +405
+acc +22
+acc +10
+nop +471
+jmp +352
+acc -6
+acc +48
+acc +7
+acc +3
+jmp +57
+acc -10
+acc +16
+acc +16
+acc +43
+jmp +432
+acc -5
+acc +0
+nop +339
+acc +49
+jmp +17
+acc +33
+nop +166
+acc -5
+jmp +392
+nop +246
+acc -7
+acc +21
+acc +30
+jmp +398
+acc +36
+acc +24
+acc -15
+acc -9
+jmp +114
+acc +19
+jmp +11
+acc +43
+nop +182
+jmp -129
+nop -29
+acc -6
+acc +2
+jmp +398
+jmp +78
+acc +36
+jmp +393
+acc +15
+nop -11
+acc -7
+acc -9
+jmp +76
+acc +0
+acc +27
+jmp +25
+acc +27
+nop -54
+jmp +458
+acc +3
+acc +29
+acc -4
+acc +43
+jmp +413
+acc +33
+acc +13
+jmp +382
+jmp -83
+acc +42
+acc +24
+jmp +64
+acc +23
+acc -13
+nop +110
+acc -5
+jmp +114
+jmp +113
+nop +112
+acc +26
+jmp -133
+jmp -12
+jmp +1
+jmp +330
+acc +25
+acc -1
+acc +30
+acc +42
+jmp -187
+jmp +1
+acc +20
+acc +35
+acc +36
+jmp -125
+jmp +165
+acc +28
+acc -17
+acc -12
+jmp +1
+jmp -120
+nop +1
+acc +2
+acc +26
+jmp +398
+acc +20
+acc -1
+jmp -127
+acc +36
+acc +14
+jmp +1
+jmp +331
+acc +50
+acc +1
+acc -10
+nop +159
+jmp -83
+jmp +374
+acc +17
+jmp +372
+acc +44
+nop -39
+jmp +228
+acc +17
+jmp +74
+acc +16
+acc +33
+acc -2
+jmp +152
+jmp +29
+acc +8
+acc +27
+nop +59
+jmp -32
+acc +28
+jmp -227
+nop -35
+jmp -168
+acc +13
+nop +390
+jmp -204
+acc +16
+acc +44
+jmp -230
+jmp +25
+acc +30
+jmp +383
+acc -11
+acc +38
+acc +11
+jmp +341
+acc +35
+acc +46
+acc -1
+jmp +94
+acc -4
+acc +12
+jmp +111
+jmp +133
+nop +283
+acc +13
+acc +37
+jmp +74
+nop -218
+jmp -178
+acc +46
+acc +25
+acc -5
+jmp -174
+acc +28
+acc +39
+acc +36
+acc +22
+jmp -172
+acc +19
+jmp -250
+nop +62
+acc +44
+nop +347
+acc +40
+jmp +345
+acc -3
+acc -13
+acc -11
+jmp +56
+jmp -180
+acc +17
+acc -4
+acc +46
+nop -165
+jmp +321
+acc -4
+jmp +1
+acc +9
+acc -12
+jmp -155
+acc +5
+jmp -96
+acc +0
+acc -2
+acc +38
+jmp +67
+acc -4
+nop -283
+acc +28
+jmp +324
+acc -9
+acc +43
+acc -1
+acc +9
+jmp -290
+acc +3
+acc +22
+nop +84
+acc -17
+jmp -210
+acc +7
+jmp -260
+nop -232
+nop +87
+acc +43
+acc +36
+jmp +96
+jmp +238
+acc +13
+acc -14
+acc +32
+acc +11
+jmp -146
+acc +13
+acc +37
+acc -10
+jmp +187
+acc +49
+acc +15
+jmp -234
+jmp -328
+jmp -136
+jmp +143
+jmp +1
+acc +27
+acc +22
+jmp +1
+jmp -5
+acc +30
+nop -7
+acc -6
+jmp -71
+acc -17
+acc +15
+jmp -52
+jmp -126
+acc -4
+jmp +151
+jmp +52
+nop -86
+acc +25
+jmp +187
+nop -22
+jmp -219
+acc +33
+nop -120
+acc +0
+jmp +215
+acc +46
+acc +38
+jmp +1
+jmp -262
+jmp +157
+acc -15
+acc +48
+acc +39
+acc +10
+jmp -137
+acc +47
+acc +50
+jmp -324
+nop +214
+acc +39
+jmp -178
+acc +49
+acc -10
+jmp -268
+jmp +50
+acc -14
+nop -100
+jmp +20
+acc +45
+acc -12
+acc -4
+jmp -208
+acc -19
+jmp -340
+acc +36
+nop -358
+acc +5
+jmp -348
+acc +47
+nop -18
+acc -12
+jmp -131
+acc +19
+acc +10
+acc +19
+acc +31
+jmp -164
+nop +162
+nop -260
+jmp +146
+acc +32
+acc -1
+nop -14
+jmp -192
+acc +3
+acc +31
+nop -185
+jmp -208
+jmp -69
+acc +43
+acc +43
+jmp -68
+acc -16
+acc +5
+acc -9
+jmp +126
+acc +33
+acc +2
+acc +34
+acc -9
+jmp -16
+acc +34
+acc -19
+jmp -266
+nop +135
+nop -389
+acc +33
+jmp -195
+acc +48
+jmp +1
+acc -12
+jmp +143
+nop -317
+acc -14
+nop -127
+acc +32
+jmp -372
+acc +24
+nop -41
+nop -42
+jmp -344
+acc +23
+nop +117
+nop +92
+acc +42
+jmp +143
+acc +48
+acc -6
+nop -272
+acc -13
+jmp -379
+acc -2
+acc +44
+acc +9
+jmp -369
+acc +6
+acc +25
+acc +34
+jmp -301
+nop -227
+acc +43
+jmp -141
+acc +12
+acc +41
+acc +17
+acc -11
+jmp +29
+jmp -121
+acc +6
+acc +7
+acc +7
+jmp +131
+nop +144
+nop -142
+acc -13
+acc -18
+jmp +149
+acc +14
+acc +49
+acc +25
+acc -17
+jmp -9
+acc +26
+acc -4
+jmp -230
+acc -18
+acc +36
+acc +27
+nop -142
+jmp +21
+acc +34
+nop +54
+jmp -476
+acc +10
+jmp -174
+nop -354
+acc +1
+jmp -324
+acc +40
+jmp +94
+acc -12
+jmp -136
+nop -454
+acc -14
+jmp +116
+acc +12
+acc -1
+nop -453
+jmp -241
+jmp -479
+acc -19
+jmp -87
+acc +27
+acc +48
+acc +0
+jmp -476
+acc +16
+acc +46
+jmp -534
+acc +0
+jmp -344
+acc +0
+acc +28
+jmp +10
+jmp -248
+nop -186
+jmp +1
+acc +26
+jmp -153
+acc +14
+acc -8
+nop -416
+jmp -91
+jmp -409
+jmp -326
+acc +2
+acc +8
+acc -18
+acc +33
+jmp -468
+jmp -175
+acc -7
+acc +45
+jmp -18
+jmp -375
+acc -8
+jmp +28
+acc -16
+nop -38
+acc +37
+acc +48
+jmp -343
+acc +10
+acc +26
+acc -9
+acc -16
+jmp -348
+acc +37
+jmp -453
+acc -2
+acc +27
+acc +17
+acc +28
+jmp -406
+acc +25
+acc +24
+acc +44
+acc +44
+jmp -532
+acc +10
+jmp -531
+acc +39
+acc +40
+jmp -284
+acc +19
+acc +3
+nop -533
+acc -3
+jmp -162
+nop -438
+acc -5
+jmp -114
+acc +45
+acc +1
+acc +28
+acc +9
+jmp -550
+jmp -222
+jmp -106
+acc -7
+nop -263
+nop -375
+jmp -381
+acc -4
+nop -223
+jmp -171
+jmp -465
+acc -2
+nop -562
+jmp -190
+acc +40
+jmp -4
+acc +30
+acc +21
+jmp -435
+acc +1
+acc +10
+jmp +1
+jmp -157
+acc -7
+acc +18
+acc -3
+acc +24
+jmp -113
+acc +21
+jmp -339
+acc +34
+jmp -563
+acc +27
+jmp -589
+jmp -61
+acc +35
+acc +50
+acc +8
+jmp -553
+acc +48
+acc -15
+acc +29
+acc +24
+jmp +1

src/day10.rs

@@ -0,0 +1,78 @@
+use aoc_runner_derive::aoc;
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
+struct Jolts(usize);
+impl std::ops::Add for Jolts {
+    type Output = Jolts;
+    fn add(self, b: Jolts) -> Jolts {
+        Jolts(self.0 + b.0)
+    }
+}
+impl std::ops::Sub for Jolts {
+    type Output = Jolts;
+    fn sub(self, b: Jolts) -> Jolts {
+        Jolts(self.0 - b.0)
+    }
+}
+
+#[aoc(day10, part1)]
+pub fn solve_d10_p1(input: &str) -> usize {
+    let jolts = {
+        let mut jolts: Vec<Jolts> = std::iter::once(Jolts(0))
+            .chain(input.split('\n').map(|x| Jolts(x.parse().unwrap())))
+            .collect();
+        jolts.sort();
+        jolts.push(*jolts.last().unwrap() + Jolts(3)); // The devices built-in adapter is always 3 more than the highest.
+        jolts
+    };
+
+    // Count the number of 1-jolt differences and 3-jolt differences in the
+    // chain.
+    let (j1_diff, j3_diff) =
+        jolts
+            .windows(2)
+            .fold((0, 0), |(j1_diff, j3_diff), entry| match entry {
+                &[a, b] if b - a == Jolts(1) => (j1_diff + 1, j3_diff),
+                &[a, b] if b - a == Jolts(3) => (j1_diff, j3_diff + 1),
+                _ => panic!("fail"),
+            });
+    j1_diff * j3_diff
+}
+
+#[aoc(day10, part2)]
+pub fn solve_d10_p2(input: &str) -> usize {
+    let jolts = {
+        let mut jolts: Vec<Jolts> = std::iter::once(Jolts(0))
+            .chain(input.split('\n').map(|x| Jolts(x.parse().unwrap())))
+            .collect();
+        jolts.sort();
+        jolts.push(*jolts.last().unwrap() + Jolts(3)); // The devices built-in adapter is always 3 more than the highest.
+        jolts
+    };
+
+    // Iterate over the list of jolt value for the adapters. For each entry
+    // store the number of combinations this adapter has that lead back to zero
+    // in `combinations_count`
+    // To calculate the number of combinations the current adapter has you first
+    // determine which are the potential upstream adapters and then sum their
+    // combinations.
+
+    let mut combinations_count = Vec::with_capacity(jolts.len());
+    // The first entry in jolts is the `0` jolts. Initialize it with 1 to
+    // indicate that it is the only way to reach the end of the chain.
+    combinations_count.push(1);
+
+    // Skip the first entry in jolts since it's already initialized in
+    // combinations_count.
+    for (idx, current_jolts) in jolts.iter().copied().enumerate().skip(1) {
+        let mut current_combinations = 0;
+
+        for upstream_idx in idx.saturating_sub(3)..idx {
+            if current_jolts - jolts[upstream_idx] <= Jolts(3) {
+                current_combinations += combinations_count[upstream_idx];
+            }
+        }
+        combinations_count.push(current_combinations);
+    }
+    *combinations_count.last().unwrap()
+}

src/day11.rs

@@ -0,0 +1,275 @@
+use aoc_runner_derive::aoc;
+use std::fmt;
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[repr(u8)]
+enum GridSquare {
+    Empty = b'L',
+    Occupied = b'#',
+    Floor = b'.',
+}
+
+impl GridSquare {
+    fn from_u8(b: u8) -> Option<Self> {
+        Some(match b {
+            b'L' => GridSquare::Empty,
+            b'#' => GridSquare::Occupied,
+            b'.' => GridSquare::Floor,
+            _ => return None,
+        })
+    }
+    fn into_u8(self) -> u8 {
+        match self {
+            GridSquare::Empty => b'L',
+            GridSquare::Occupied => b'#',
+            GridSquare::Floor => b'.',
+        }
+    }
+}
+
+impl fmt::Display for GridSquare {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self.into_u8() as char)
+    }
+}
+
+#[derive(Debug, Copy, Clone)]
+struct GridIdx(usize);
+
+#[derive(Debug, PartialEq, Eq)]
+struct Grid {
+    row_len: usize,
+    grid: Vec<GridSquare>,
+}
+
+impl Grid {
+    fn parse(input: &str) -> Option<Self> {
+        let row_len = input.find('\n')?;
+        let grid = input
+            .bytes()
+            .filter(|&b| b != b'\n')
+            .map(|b| GridSquare::from_u8(b))
+            .collect::<Option<Vec<_>>>()?;
+        Some(Grid { row_len, grid })
+    }
+
+    fn new(grid: Vec<GridSquare>, row_len: usize) -> Grid {
+        if grid.len() % row_len != 0 {
+            panic!("invalid grid");
+        }
+        Grid { grid, row_len }
+    }
+
+    fn enumerate(&self) -> impl Iterator<Item = (GridIdx, GridSquare)> + '_ {
+        self.grid
+            .iter()
+            .copied()
+            .enumerate()
+            .map(|(idx, square)| (GridIdx(idx), square))
+    }
+
+    fn is_occupied(&self, idx: usize) -> bool {
+        self.grid[idx] == GridSquare::Occupied
+    }
+
+    fn num_adjacent_occupied(&self, idx: GridIdx) -> usize {
+        let mut total = 0;
+        let col = idx.0 % self.row_len;
+
+        // Add row above idx if it exists.
+        if self.row_len < idx.0 {
+            let above_idx = idx.0 - self.row_len;
+            if col > 0 && self.is_occupied(above_idx - 1) {
+                total += 1;
+            }
+            if self.is_occupied(above_idx) {
+                total += 1;
+            }
+            if col < self.row_len - 1 && self.is_occupied(above_idx + 1) {
+                total += 1;
+            }
+        }
+
+        // Add left and right if they exist.
+        if col > 0 && self.is_occupied(idx.0 - 1) {
+            total += 1;
+        }
+        if col < self.row_len - 1 && self.is_occupied(idx.0 + 1) {
+            total += 1;
+        }
+
+        // Add row below if it exists.
+        let below_idx = idx.0 + self.row_len;
+        if below_idx < self.grid.len() {
+            if col > 0 && self.is_occupied(below_idx - 1) {
+                total += 1;
+            }
+            if self.is_occupied(below_idx) {
+                total += 1;
+            }
+            if col < self.row_len - 1 && self.is_occupied(below_idx + 1) {
+                total += 1;
+            }
+        }
+        total
+    }
+
+    fn num_visible_occupied(&self, idx: GridIdx) -> usize {
+        let mut total = 0;
+        for &(x_step, y_step) in &[
+            (-1, -1),
+            (-1, 0),
+            (-1, 1),
+            (0, -1),
+            (0, 1),
+            (1, -1),
+            (1, 0),
+            (1, 1),
+        ] {
+            total += GridIter::new(self, idx, x_step, y_step)
+                .find_map(|idx| match &self.grid[idx.0] {
+                    GridSquare::Empty => Some(0),
+                    GridSquare::Occupied => Some(1),
+                    GridSquare::Floor => None,
+                })
+                .unwrap_or(0);
+        }
+        total
+    }
+}
+
+impl fmt::Display for Grid {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        for line in self.grid.chunks_exact(self.row_len) {
+            for square in line {
+                write!(f, "{}", square)?;
+            }
+            write!(f, "\n")?;
+        }
+        Ok(())
+    }
+}
+
+#[aoc(day11, part1)]
+fn solve_d11_p1(input: &str) -> usize {
+    fn next_grid(orig: &Grid) -> Grid {
+        let new_grid: Vec<GridSquare> = orig
+            .enumerate()
+            .map(|(grid_idx, grid_square)| match grid_square {
+                GridSquare::Empty => {
+                    let occupied = orig.num_adjacent_occupied(grid_idx);
+                    if occupied == 0 {
+                        GridSquare::Occupied
+                    } else {
+                        GridSquare::Empty
+                    }
+                }
+                GridSquare::Occupied => {
+                    let occupied = orig.num_adjacent_occupied(grid_idx);
+                    if occupied >= 4 {
+                        GridSquare::Empty
+                    } else {
+                        GridSquare::Occupied
+                    }
+                }
+                GridSquare::Floor => GridSquare::Floor,
+            })
+            .collect();
+        Grid::new(new_grid, orig.row_len)
+    }
+    let mut grid = Grid::parse(input).unwrap();
+    let stable_grid = loop {
+        let next = next_grid(&grid);
+        if next == grid {
+            break next;
+        }
+        grid = next;
+    };
+    stable_grid
+        .enumerate()
+        .filter(|&(_idx, square)| square == GridSquare::Occupied)
+        .count()
+}
+
+#[derive(Debug)]
+struct GridIter {
+    x: isize,
+    y: isize,
+    x_step: isize,
+    y_step: isize,
+    num_cols: usize,
+    num_rows: usize,
+}
+impl GridIter {
+    fn new(grid: &Grid, idx: GridIdx, x_step: isize, y_step: isize) -> Self {
+        let num_cols = grid.row_len;
+        let num_rows = grid.grid.len() / num_cols;
+        let x = (idx.0 % num_cols) as isize;
+        let y = (idx.0 / num_cols) as isize;
+        GridIter {
+            x,
+            y,
+            x_step,
+            y_step,
+            num_cols,
+            num_rows,
+        }
+    }
+}
+
+impl Iterator for GridIter {
+    type Item = GridIdx;
+
+    fn next(&mut self) -> Option<GridIdx> {
+        self.x += self.x_step;
+        self.y += self.y_step;
+        if self.x < 0 || self.x >= self.num_cols as isize {
+            return None;
+        }
+        if self.y < 0 || self.y >= self.num_rows as isize {
+            return None;
+        }
+        Some(GridIdx(self.y as usize * self.num_cols + self.x as usize))
+    }
+}
+
+#[aoc(day11, part2)]
+fn solve_d11_p2(input: &str) -> usize {
+    fn next_grid(orig: &Grid) -> Grid {
+        let new_grid: Vec<GridSquare> = orig
+            .enumerate()
+            .map(|(grid_idx, grid_square)| match grid_square {
+                GridSquare::Empty => {
+                    let occupied = orig.num_visible_occupied(grid_idx);
+                    if occupied == 0 {
+                        GridSquare::Occupied
+                    } else {
+                        GridSquare::Empty
+                    }
+                }
+                GridSquare::Occupied => {
+                    let occupied = orig.num_visible_occupied(grid_idx);
+                    if occupied >= 5 {
+                        GridSquare::Empty
+                    } else {
+                        GridSquare::Occupied
+                    }
+                }
+                GridSquare::Floor => GridSquare::Floor,
+            })
+            .collect();
+        Grid::new(new_grid, orig.row_len)
+    }
+    let mut grid = Grid::parse(input).unwrap();
+    let stable_grid = loop {
+        let next = next_grid(&grid);
+        if next == grid {
+            break next;
+        }
+        grid = next;
+    };
+    stable_grid
+        .enumerate()
+        .filter(|&(_idx, square)| square == GridSquare::Occupied)
+        .count()
+}

src/day12.rs

@@ -0,0 +1,148 @@
+use aoc_runner_derive::aoc;
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+enum LeftRight {
+    Left,
+    Right,
+}
+
+#[derive(Debug, Copy, Clone)]
+#[repr(u8)]
+enum Direction {
+    North = 0,
+    East = 1,
+    South = 2,
+    West = 3,
+}
+
+impl Direction {
+    fn xy(self) -> (isize, isize) {
+        match self {
+            Direction::North => (0, 1),
+            Direction::East => (1, 0),
+            Direction::South => (0, -1),
+            Direction::West => (-1, 0),
+        }
+    }
+
+    fn from_usize(x: usize) -> Self {
+        match x {
+            0 => Direction::North,
+            1 => Direction::East,
+            2 => Direction::South,
+            3 => Direction::West,
+            _ => panic!("invalid direction"),
+        }
+    }
+
+    fn rotate_ship(self, degrees: usize, lr: LeftRight) -> Self {
+        debug_assert!(degrees % 90 == 0);
+        let num_turns = degrees / 90;
+        Direction::from_usize(match lr {
+            LeftRight::Left => (self as usize).wrapping_sub(num_turns) & 0b11,
+            LeftRight::Right => (self as usize).wrapping_add(num_turns) & 0b11,
+        })
+    }
+}
+
+enum Action {
+    North(usize),
+    East(usize),
+    South(usize),
+    West(usize),
+    Left(usize),
+    Right(usize),
+    Forward(usize),
+}
+
+impl Action {
+    fn parse(input: &str) -> Option<Action> {
+        let value = (&input[1..]).parse().ok()?;
+        Some(match input.as_bytes()[0] {
+            b'N' => Action::North(value),
+            b'E' => Action::East(value),
+            b'S' => Action::South(value),
+            b'W' => Action::West(value),
+            b'L' => Action::Left(value),
+            b'R' => Action::Right(value),
+            b'F' => Action::Forward(value),
+            _ => return None,
+        })
+    }
+}
+
+#[aoc(day12, part1)]
+fn solve_d12_p1(input: &str) -> usize {
+    let mut x = 0isize;
+    let mut y = 0isize;
+    let mut ship_dir = Direction::East;
+    for action in input.split('\n').map(|x| Action::parse(x).unwrap()) {
+        match action {
+            Action::North(distance) => y += distance as isize,
+            Action::East(distance) => x += distance as isize,
+            Action::South(distance) => y -= distance as isize,
+            Action::West(distance) => x -= distance as isize,
+            Action::Left(degrees) => ship_dir = ship_dir.rotate_ship(degrees, LeftRight::Left),
+            Action::Right(degrees) => ship_dir = ship_dir.rotate_ship(degrees, LeftRight::Right),
+            Action::Forward(distance) => {
+                let (x_step, y_step) = ship_dir.xy();
+                x += x_step * distance as isize;
+                y += y_step * distance as isize;
+            }
+        }
+    }
+    x.abs() as usize + y.abs() as usize
+}
+
+#[derive(Debug, Copy, Clone)]
+struct Waypoint {
+    x: isize,
+    y: isize,
+}
+
+impl Waypoint {
+    fn rotate(self, mut degrees: usize, lr: LeftRight) -> Self {
+        assert!(degrees == 90 || degrees == 180 || degrees == 270);
+        if lr == LeftRight::Left {
+            degrees = 360 - degrees;
+        }
+        match degrees {
+            0 => self,
+            90 => Waypoint {
+                x: self.y,
+                y: -self.x,
+            },
+            180 => Waypoint {
+                x: -self.x,
+                y: -self.y,
+            },
+            270 => Waypoint {
+                x: -self.y,
+                y: self.x,
+            },
+            _ => unreachable!(),
+        }
+    }
+}
+
+#[aoc(day12, part2)]
+fn solve_d12_p2(input: &str) -> usize {
+    let mut waypoint = Waypoint { x: 10, y: 1 };
+    let mut x = 0isize;
+    let mut y = 0isize;
+    for action in input.split('\n').map(|x| Action::parse(x).unwrap()) {
+        match action {
+            Action::North(distance) => waypoint.y += distance as isize,
+            Action::East(distance) => waypoint.x += distance as isize,
+            Action::South(distance) => waypoint.y -= distance as isize,
+            Action::West(distance) => waypoint.x -= distance as isize,
+            Action::Left(degrees) => waypoint = waypoint.rotate(degrees, LeftRight::Left),
+            Action::Right(degrees) => waypoint = waypoint.rotate(degrees, LeftRight::Right),
+            Action::Forward(distance) => {
+                x += waypoint.x * distance as isize;
+                y += waypoint.y * distance as isize;
+            }
+        }
+    }
+    x.abs() as usize + y.abs() as usize
+}

src/day13.rs

@@ -0,0 +1,35 @@
+use aoc_runner_derive::aoc;
+
+#[aoc(day13, part1)]
+fn solve_d13_p1(input: &str) -> usize {
+    let first_newline = input.find('\n').unwrap();
+    let (t, bus_ids) = input.split_at(first_newline);
+    let bus_ids = bus_ids.trim();
+
+    let t: usize = t.parse().unwrap();
+
+    struct WaitTime {
+        bus_id: usize,
+        wait_time: usize,
+    }
+    let min_wait_time = bus_ids
+        .split(',')
+        .filter(|&x| x != "x")
+        .map(|x| x.parse::<usize>().unwrap())
+        .fold(
+            WaitTime {
+                bus_id: usize::MAX,
+                wait_time: usize::MAX,
+            },
+            |min, bus_id| {
+                let offset = t % bus_id;
+                let wait_time = if offset == 0 { 0 } else { bus_id - offset };
+                if min.wait_time < wait_time {
+                    min
+                } else {
+                    WaitTime { bus_id, wait_time }
+                }
+            },
+        );
+    min_wait_time.bus_id * min_wait_time.wait_time
+}

src/day14.rs

@@ -0,0 +1,174 @@
+use aoc_runner_derive::aoc;
+use std::collections::HashMap;
+
+#[derive(Debug)]
+enum Instr<'a> {
+    Mask(&'a str),
+    UpdateMem { offset: u64, value: u64 },
+}
+
+impl<'a> Instr<'a> {
+    fn parse(instr: &'a str) -> Option<Self> {
+        let eq_idx = instr.find('=')?;
+        let lhs = &instr[..eq_idx - 1];
+        let rhs = &instr[eq_idx + 2..];
+        if lhs == "mask" {
+            Some(Instr::Mask(rhs))
+        } else {
+            Self::parse_mem(lhs, rhs)
+        }
+    }
+
+    fn parse_mem(lhs: &str, rhs: &str) -> Option<Self> {
+        let offset: u64 = lhs[4..lhs.len() - 1].parse().ok()?;
+        let value: u64 = rhs.parse().ok()?;
+        Some(Instr::UpdateMem { offset, value })
+    }
+}
+
+#[derive(Debug)]
+struct Mask {
+    or_mask: u64,
+    and_mask: u64,
+}
+impl Mask {
+    fn parse(mask: &[u8]) -> Option<Mask> {
+        if mask.len() != 36 {
+            return None;
+        }
+        let mut and_mask = !0;
+        let mut or_mask = 0;
+        for (idx, b) in mask.iter().enumerate() {
+            match b {
+                b'0' => {
+                    and_mask &= !(1 << 35 - idx);
+                }
+                b'1' => {
+                    or_mask |= 1 << 35 - idx;
+                }
+                b'X' => {}
+                _ => return None,
+            }
+        }
+        Some(Mask { and_mask, or_mask })
+    }
+
+    fn mask(&self, value: u64) -> u64 {
+        value & self.and_mask | self.or_mask
+    }
+}
+
+#[aoc(day14, part1)]
+fn solve_d14_p1(input: &str) -> u64 {
+    // Assume initialization doesn't write to any memory offset multiple times.
+    let mut iter = input.split('\n').map(|x| Instr::parse(x).unwrap());
+    let mut mask = match iter.next() {
+        Some(Instr::Mask(mask)) => Mask::parse(mask.as_bytes()).unwrap(),
+        _ => panic!("first line is not valid bitmask"),
+    };
+    let mut memory = std::collections::HashMap::new();
+    for instr in iter {
+        match instr {
+            Instr::Mask(new_mask) => mask = Mask::parse(new_mask.as_bytes()).unwrap(),
+            Instr::UpdateMem { offset, value } => {
+                memory.insert(offset, mask.mask(value));
+            }
+        }
+    }
+    memory.values().sum()
+}
+
+struct Mask2 {
+    floating: u64,
+    or_mask: u64,
+}
+
+impl Mask2 {
+    fn parse(mask: &[u8]) -> Option<Mask2> {
+        if mask.len() != 36 {
+            return None;
+        }
+        let mut floating = 0;
+        let mut or_mask = 0;
+        for (idx, b) in mask.iter().enumerate() {
+            match b {
+                b'0' => {}
+                b'1' => {
+                    or_mask |= 1 << 35 - idx;
+                }
+                b'X' => {
+                    floating |= 1 << 35 - idx;
+                }
+                _ => return None,
+            }
+        }
+        Some(Mask2 { floating, or_mask })
+    }
+
+    fn set_memory(&self, mem: &mut HashMap<u64, u64>, address: u64, value: u64) {
+        let offset = address | self.or_mask;
+        for mut floating_value in 0..2 << self.floating.count_ones() {
+            let mut addr = offset;
+            for bit in BitIndexes::new(self.floating) {
+                addr = set_bit(addr, bit, (floating_value & 1) == 1);
+                floating_value >>= 1;
+            }
+            mem.insert(addr, value);
+        }
+    }
+}
+
+fn set_bit(value: u64, bit_idx: u64, enabled: bool) -> u64 {
+    if enabled {
+        value | (1 << bit_idx)
+    } else {
+        value & !(1 << bit_idx)
+    }
+}
+
+struct BitIndexes {
+    value: u64,
+    current_idx: u64,
+}
+impl BitIndexes {
+    fn new(value: u64) -> Self {
+        BitIndexes {
+            value,
+            current_idx: 0,
+        }
+    }
+}
+
+impl Iterator for BitIndexes {
+    type Item = u64;
+    fn next(&mut self) -> Option<u64> {
+        while self.value > 0 {
+            let set = self.value & 1 == 1;
+            self.value >>= 1;
+            self.current_idx += 1;
+            if set {
+                return Some(self.current_idx - 1);
+            }
+        }
+        return None;
+    }
+}
+
+#[aoc(day14, part2)]
+fn solve_d14_p2(input: &str) -> u64 {
+    let mut iter = input.split('\n').map(|x| Instr::parse(x).unwrap());
+    let mut mask = match iter.next() {
+        Some(Instr::Mask(mask)) => Mask2::parse(mask.as_bytes()).unwrap(),
+        _ => panic!("first line is not valid bitmask"),
+    };
+    let mut memory = std::collections::HashMap::new();
+    for instr in iter {
+        match instr {
+            Instr::Mask(new_mask) => mask = Mask2::parse(new_mask.as_bytes()).unwrap(),
+            Instr::UpdateMem { offset, value } => {
+                mask.set_memory(&mut memory, offset, value);
+            }
+        }
+    }
+    memory.values().sum()
+}

src/day15.rs

@@ -0,0 +1,61 @@
+use aoc_runner_derive::aoc;
+
+use std::collections::{hash_map::Entry, HashMap};
+
+fn spoken_word_n(mut spoken: HashMap<usize, usize>, mut last_spoken: usize, n: usize) -> usize {
+    for turn in spoken.len() + 1..=n {
+        //dbg!(turn, last_spoken);
+        last_spoken = match spoken.entry(last_spoken) {
+            Entry::Occupied(mut occupied) => {
+                let difference = turn - 1 - *occupied.get();
+                occupied.insert(turn - 1);
+                difference
+            }
+            Entry::Vacant(vacant) => {
+                vacant.insert(turn - 1);
+                0
+            }
+        }
+    }
+    last_spoken
+}
+
+#[aoc(day15, part1)]
+fn solve_d15_p1(input: &str) -> usize {
+    let mut last_spoken = None;
+    let spoken: HashMap<usize, usize> = input
+        .split(',')
+        .enumerate()
+        .map(|(idx, spoken)| {
+            let spoken = spoken.parse().unwrap();
+            last_spoken = Some(spoken);
+            (spoken, idx + 1)
+        })
+        .collect();
+    spoken_word_n(spoken, last_spoken.unwrap(), 2020)
+}
+
+#[aoc(day15, part2)]
+fn solve_d15_p2(input: &str) -> usize {
+    let mut last_spoken = None;
+    let spoken: HashMap<usize, usize> = input
+        .split(',')
+        .enumerate()
+        .map(|(idx, spoken)| {
+            let spoken = spoken.parse().unwrap();
+            last_spoken = Some(spoken);
+            (spoken, idx + 1)
+        })
+        .collect();
+    spoken_word_n(spoken, last_spoken.unwrap(), 30_000_000)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part1() {
+        assert_eq!(solve_d15_p1("1,3,2"), 1);
+    }
+}

src/day16.rs

@@ -0,0 +1,303 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+use std::ops::RangeInclusive;
+
+struct Rule<'a> {
+    name: &'a str,
+    a: RangeInclusive<u16>,
+    b: RangeInclusive<u16>,
+}
+impl<'a> Rule<'a> {
+    fn parse(input: &'a str) -> Option<Self> {
+        let (name, rem) = split_once(input, ": ")?;
+        let (a, b) = split_once(rem, " or ")?;
+        let a = {
+            let (start, end) = split_once(a, "-")?;
+            RangeInclusive::<u16>::new(start.parse().ok()?, end.parse().ok()?)
+        };
+        let b = {
+            let (start, end) = split_once(b, "-")?;
+            RangeInclusive::<u16>::new(start.parse().ok()?, end.parse().ok()?)
+        };
+        Some(Rule { name, a, b })
+    }
+
+    fn matches(&self, value: u16) -> bool {
+        self.a.contains(&value) || self.b.contains(&value)
+    }
+}
+
+#[aoc(day16, part1)]
+fn solve_d16_p1(input: &str) -> u16 {
+    let (rules, rem) = split_once(input, "\n\nyour ticket:\n").unwrap();
+    let (_your_ticket, nearby_tickets) = split_once(rem, "\n\nnearby tickets:\n").unwrap();
+
+    let rules: Vec<_> = rules.split('\n').map(|x| Rule::parse(x).unwrap()).collect();
+    nearby_tickets
+        .split('\n')
+        .flat_map(|line| line.split(','))
+        .filter_map(|x| {
+            let value: u16 = x.parse().unwrap();
+            if rules.iter().any(|rule| rule.matches(value)) {
+                None
+            } else {
+                Some(value)
+            }
+        })
+        .sum()
+}
+
+#[aoc(day16, part2)]
+fn solve_d16_p2(input: &str) -> usize {
+    let (rules, rem) = split_once(input, "\n\nyour ticket:\n").unwrap();
+    let (my_ticket, nearby_tickets) = split_once(rem, "\n\nnearby tickets:\n").unwrap();
+
+    let rules: Vec<_> = rules.split('\n').map(|x| Rule::parse(x).unwrap()).collect();
+    assert!(rules.len() < 63);
+    let mut candidates = vec![(1u64 << rules.len()) - 1; rules.len()];
+    let mut scratch = Vec::with_capacity(rules.len());
+    for line in nearby_tickets.split('\n') {
+        scratch.clear();
+        scratch.extend(line.split(',').map(|field| {
+            let value = field.parse().unwrap();
+            // Initialize a bitmap of which rules the field is valid for. `1`
+            // indicates the value is valid for that field. `0` is invalid.
+            let mut bitmap = 0u64;
+            for (rule_idx, rule) in rules.iter().enumerate() {
+                if rule.matches(value) {
+                    bitmap |= 1 << rule_idx;
+                }
+            }
+            bitmap
+        }));
+        if scratch.iter().copied().any(|x| x == 0) {
+            continue;
+        }
+        candidates
+            .iter_mut()
+            .zip(scratch.iter())
+            .for_each(|(candidate, valid_bitmask)| {
+                *candidate &= valid_bitmask;
+            });
+    }
+    while candidates.iter().copied().any(|x| x.count_ones() > 1) {
+        for idx in 0..candidates.len() {
+            let candidate = candidates[idx];
+            if candidate.count_ones() == 1 {
+                let mask = !candidate;
+                for before in &mut candidates[..idx] {
+                    *before &= mask;
+                }
+                for after in &mut candidates[idx + 1..] {
+                    *after &= mask;
+                }
+            }
+        }
+    }
+    my_ticket
+        .split(',')
+        .map(|x| x.parse::<usize>().unwrap())
+        .zip(candidates.into_iter().map(|x| x.trailing_zeros() as usize))
+        .filter_map(|(field, rule_idx)| {
+            if rules[rule_idx].name.starts_with("departure") {
+                Some(field)
+            } else {
+                None
+            }
+        })
+        .product()
+}
+
+#[aoc(day16, part2, avx2)]
+fn solve_d16_p2_avx2(input: &str) -> usize {
+    unsafe { avx2::solve_d16_p2(input) }
+}
+
+#[cfg(all(target_arch = "x86_64", target_feature = "avx2"))]
+mod avx2 {
+    use super::{split_once, Rule};
+    use std::arch::x86_64::*;
+
+    struct RuleEval {
+        lo_start: [__m256i; 2],
+        lo_end: [__m256i; 2],
+        hi_start: [__m256i; 2],
+        hi_end: [__m256i; 2],
+    }
+
+    impl RuleEval {
+        #[target_feature(enable = "avx2")]
+        unsafe fn new(rules: &[Rule]) -> Option<Self> {
+            if rules.len() > 31 {
+                return None;
+            }
+            let lo_start = {
+                let mut lo_start = [_mm256_setzero_si256(); 2];
+                let lo_start_16 = &mut *(&mut lo_start as *mut [__m256i; 2] as *mut [i16; 32]);
+                let mut rules_iter = rules.iter();
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_start_16[idx] = *rule.a.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_start_16[idx + 16] = *rule.a.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_start_16[idx + 8] = *rule.a.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_start_16[idx + 24] = *rule.a.start() as i16 - 1;
+                }
+                lo_start
+            };
+            let lo_end = {
+                let mut lo_end = [_mm256_setzero_si256(); 2];
+                let lo_end_16 = &mut *(&mut lo_end as *mut [__m256i; 2] as *mut [i16; 32]);
+                let mut rules_iter = rules.iter();
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_end_16[idx] = *rule.a.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_end_16[idx + 16] = *rule.a.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_end_16[idx + 8] = *rule.a.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    lo_end_16[idx + 24] = *rule.a.end() as i16 + 1;
+                }
+                lo_end
+            };
+            let hi_start = {
+                let mut hi_start = [_mm256_setzero_si256(); 2];
+                let hi_start_16 = &mut *(&mut hi_start as *mut [__m256i; 2] as *mut [i16; 32]);
+                let mut rules_iter = rules.iter();
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_start_16[idx] = *rule.b.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_start_16[idx + 16] = *rule.b.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_start_16[idx + 8] = *rule.b.start() as i16 - 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_start_16[idx + 24] = *rule.b.start() as i16 - 1;
+                }
+                hi_start
+            };
+            let hi_end = {
+                let mut hi_end = [_mm256_setzero_si256(); 2];
+                let hi_end_16 = &mut *(&mut hi_end as *mut [__m256i; 2] as *mut [i16; 32]);
+                let mut rules_iter = rules.iter();
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_end_16[idx] = *rule.b.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_end_16[idx + 16] = *rule.b.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_end_16[idx + 8] = *rule.b.end() as i16 + 1;
+                }
+                for (idx, rule) in rules_iter.by_ref().take(8).enumerate() {
+                    hi_end_16[idx + 24] = *rule.b.end() as i16 + 1;
+                }
+                hi_end
+            };
+            Some(RuleEval {
+                lo_start,
+                lo_end,
+                hi_start,
+                hi_end,
+            })
+        }
+
+        #[target_feature(enable = "avx2")]
+        unsafe fn eval(&self, value: u16) -> u32 {
+            let value = _mm256_set1_epi16(value as i16);
+            let within_lo = [
+                _mm256_and_si256(
+                    _mm256_cmpgt_epi16(self.lo_end[0], value),
+                    _mm256_cmpgt_epi16(value, self.lo_start[0]),
+                ),
+                _mm256_and_si256(
+                    _mm256_cmpgt_epi16(self.lo_end[1], value),
+                    _mm256_cmpgt_epi16(value, self.lo_start[1]),
+                ),
+            ];
+            let within_hi = [
+                _mm256_and_si256(
+                    _mm256_cmpgt_epi16(self.hi_end[0], value),
+                    _mm256_cmpgt_epi16(value, self.hi_start[0]),
+                ),
+                _mm256_and_si256(
+                    _mm256_cmpgt_epi16(self.hi_end[1], value),
+                    _mm256_cmpgt_epi16(value, self.hi_start[1]),
+                ),
+            ];
+            let valid = [
+                _mm256_or_si256(within_lo[0], within_hi[0]),
+                _mm256_or_si256(within_lo[1], within_hi[1]),
+            ];
+            let packed = _mm256_packs_epi16(valid[0], valid[1]);
+            _mm256_movemask_epi8(packed) as u32
+        }
+    }
+
+    #[target_feature(enable = "avx2")]
+    pub unsafe fn solve_d16_p2(input: &str) -> usize {
+        let (rules, rem) = split_once(input, "\n\nyour ticket:\n").unwrap();
+        let (my_ticket, nearby_tickets) = split_once(rem, "\n\nnearby tickets:\n").unwrap();
+
+        let rules: Vec<_> = rules.split('\n').map(|x| Rule::parse(x).unwrap()).collect();
+        assert!(rules.len() < 32);
+        let rule_eval = RuleEval::new(&rules).unwrap();
+        let mut candidates = [_mm256_set1_epi32((1i32 << rules.len()) - 1); 4];
+        let mut scratch_space = [_mm256_set1_epi32(1); 4];
+        for line in nearby_tickets.split('\n') {
+            let scratch_slice = &mut *(&mut scratch_space as *mut _ as *mut [u32; 32]);
+            for (field, scratch) in line.split(',').zip(scratch_slice.iter_mut()) {
+                let field = field.parse().unwrap();
+                *scratch = rule_eval.eval(field);
+            }
+
+            if scratch_space.iter().copied().any(|elem| {
+                _mm256_movemask_epi8(_mm256_cmpeq_epi32(elem, _mm256_set1_epi32(0))) != 0
+            }) {
+                continue;
+            }
+
+            for (candidate, valid_bitmask) in candidates.iter_mut().zip(scratch_space.iter()) {
+                *candidate = _mm256_and_si256(*candidate, *valid_bitmask);
+            }
+        }
+
+        let candidates = &mut *(&mut candidates as *mut _ as *mut [u32; 32]);
+        let candidates = &mut candidates[..rules.len()];
+        while candidates.iter().copied().any(|x| x.count_ones() > 1) {
+            for idx in 0..candidates.len() {
+                let candidate = candidates[idx];
+                if candidate.count_ones() == 1 {
+                    let mask = !candidate;
+                    for before in &mut candidates[..idx] {
+                        *before &= mask;
+                    }
+                    for after in &mut candidates[idx + 1..] {
+                        *after &= mask;
+                    }
+                }
+            }
+        }
+        my_ticket
+            .split(',')
+            .map(|x| x.parse::<usize>().unwrap())
+            .zip(candidates.into_iter().map(|x| x.trailing_zeros() as usize))
+            .filter_map(|(field, rule_idx)| {
+                if rules[rule_idx].name.starts_with("departure") {
+                    Some(field)
+                } else {
+                    None
+                }
+            })
+            .product()
+    }
+}

src/day17.rs

@@ -0,0 +1,101 @@
+use aoc_runner_derive::aoc;
+use std::collections::HashSet;
+
+#[aoc(day17, part1)]
+fn solve_d17_p1(input: &str) -> usize {
+    let mut world = HashSet::new();
+    for (y, line) in input.split('\n').enumerate() {
+        for (x, _) in line
+            .as_bytes()
+            .iter()
+            .copied()
+            .enumerate()
+            .filter(|&(_, byte)| byte == b'#')
+        {
+            world.insert((x as isize, y as isize, 0isize, 0isize));
+        }
+    }
+    for _ in 0..6 {
+        world = step(world);
+    }
+    world.len()
+}
+
+fn neighbors(
+    world: &HashSet<(isize, isize, isize, isize)>,
+    (x, y, z, w): (isize, isize, isize, isize),
+) -> usize {
+    let mut count = 0;
+    for xa in x - 1..=x + 1 {
+        for ya in y - 1..=y + 1 {
+            for za in z - 1..=z + 1 {
+                for wa in w - 1..=w + 1 {
+                    count += world.contains(&(xa, ya, za, wa)) as usize;
+                }
+            }
+        }
+    }
+    count - world.contains(&(x, y, z, w)) as usize
+}
+
+fn step(world: HashSet<(isize, isize, isize, isize)>) -> HashSet<(isize, isize, isize, isize)> {
+    struct MinMax {
+        x_min: isize,
+        x_max: isize,
+        y_min: isize,
+        y_max: isize,
+        z_min: isize,
+        z_max: isize,
+        w_min: isize,
+        w_max: isize,
+    }
+    let MinMax {
+        x_min,
+        x_max,
+        y_min,
+        y_max,
+        z_min,
+        z_max,
+        w_min,
+        w_max,
+    } = world.iter().fold(
+        MinMax {
+            x_min: isize::MAX,
+            x_max: isize::MIN,
+            y_min: isize::MAX,
+            y_max: isize::MIN,
+            z_min: isize::MAX,
+            z_max: isize::MIN,
+            w_min: isize::MAX,
+            w_max: isize::MIN,
+        },
+        |minmax, &(x, y, z, w)| MinMax {
+            x_min: std::cmp::min(minmax.x_min, x),
+            x_max: std::cmp::max(minmax.x_max, x),
+            y_min: std::cmp::min(minmax.y_min, y),
+            y_max: std::cmp::max(minmax.y_max, y),
+            z_min: std::cmp::min(minmax.z_min, z),
+            z_max: std::cmp::max(minmax.z_max, z),
+            w_min: std::cmp::min(minmax.w_min, w),
+            w_max: std::cmp::max(minmax.w_max, w),
+        },
+    );
+    let mut new_world = HashSet::new();
+    for x in x_min - 1..=x_max + 1 {
+        for y in y_min - 1..=y_max + 1 {
+            for z in z_min - 1..=z_max + 1 {
+                for w in w_min - 1..=w_max + 1 {
+                    let active = world.contains(&(x, y, z, w));
+                    let n = neighbors(&world, (x, y, z, w));
+                    if active && (n == 2 || n == 3) {
+                        new_world.insert((x, y, z, w));
+                    }
+                    if !active && n == 3 {
+                        new_world.insert((x, y, z, w));
+                    }
+                }
+            }
+        }
+    }
+    new_world
+}

src/day18.rs

@@ -0,0 +1,164 @@
+use aoc_runner_derive::aoc;
+
+fn num(i: &str) -> Option<(&str, usize)> {
+    let i = i.trim_start();
+    let end_idx = i
+        .as_bytes()
+        .iter()
+        .copied()
+        .position(|b| !(b'0'..=b'9').contains(&b))
+        .unwrap_or(i.len());
+    let n = (&i[..end_idx]).parse().ok()?;
+    let rem = &i[end_idx..];
+    Some((rem, n))
+}
+
+#[aoc(day18, part1)]
+fn solve_d18_p1(input: &str) -> usize {
+    #[derive(Debug, Copy, Clone)]
+    enum Operator {
+        Add,
+        Mul,
+    }
+
+    // The next token is an operator '+' or '*'
+    fn operator(i: &str) -> Option<(&str, Operator)> {
+        let i = i.trim_start();
+        let op = match i.as_bytes()[0] {
+            b'+' => Operator::Add,
+            b'*' => Operator::Mul,
+            _ => return None,
+        };
+        Some((&i[1..], op))
+    }
+
+    // The next token is '('. Evaluate the entire expression within the parens.
+    fn paren(i: &str) -> Option<(&str, usize)> {
+        let i = i.trim_start();
+        if i.is_empty() || i.as_bytes()[0] != b'(' {
+            return None;
+        }
+        let (rem, n) = expr(&i[1..])?;
+        if rem.is_empty() || rem.as_bytes()[0] != b')' {
+            return None;
+        }
+        let rem = &rem[1..];
+        Some((rem, n))
+    }
+
+    // the next token is either a bare number or an expression within a paren,
+    // return either the number of the evaluation of the paren enclosed
+    // expression.
+    fn num_or_paren(i: &str) -> Option<(&str, usize)> {
+        num(i).or_else(|| paren(i))
+    }
+
+    // the next token is an operator ('+' or '*') followed by a number or an
+    // expression within a paren.
+    fn operator_and_rhs(i: &str) -> Option<(&str, (Operator, usize))> {
+        let (i, op) = operator(i)?;
+        let (i, rhs) = num_or_paren(i)?;
+        Some((i, (op, rhs)))
+    }
+
+    // evaluate the expression provided as input. Return the remaining input
+    // after evaluation is complete.
+    fn expr(i: &str) -> Option<(&str, usize)> {
+        let (mut rem, mut lhs) = num_or_paren(i)?;
+
+        loop {
+            if rem.is_empty() {
+                break;
+            }
+
+            if let Some((irem, (op, rhs))) = operator_and_rhs(rem) {
+                rem = irem;
+                lhs = match op {
+                    Operator::Add => lhs + rhs,
+                    Operator::Mul => lhs * rhs,
+                };
+            } else {
+                break;
+            }
+        }
+        Some((rem, lhs))
+    }
+
+    input.split('\n').map(|line| expr(line).unwrap().1).sum()
+}
+
+#[aoc(day18, part2)]
+fn solve_d18_p2(input: &str) -> usize {
+    // The next token is '('. Evaluate the entire expression within the parens.
+    fn paren(i: &str) -> Option<(&str, usize)> {
+        let i = i.trim_start();
+        if i.is_empty() || i.as_bytes()[0] != b'(' {
+            return None;
+        }
+        let (rem, n) = expr(&i[1..])?;
+        if rem.is_empty() || rem.as_bytes()[0] != b')' {
+            return None;
+        }
+        let rem = &rem[1..];
+        Some((rem, n))
+    }
+
+    // the next token is either a bare number or an expression within a paren,
+    // return either the number of the evaluation of the paren enclosed
+    // expression.
+    fn num_or_paren(i: &str) -> Option<(&str, usize)> {
+        num(i).or_else(|| paren(i))
+    }
+
+    // The next token is a number or an expression within a paren, optionally
+    // followed by some number of '+' and number or paren enclosed expressions.
+    // The returned value is the sum of the entire sequence.
+    fn add_or_paren(i: &str) -> Option<(&str, usize)> {
+        let (mut i, mut lhs) = num_or_paren(i)?;
+
+        loop {
+            i = i.trim_start();
+            if i.is_empty() || i.as_bytes()[0] != b'+' {
+                break;
+            }
+            i = &i[1..];
+            if let Some((rem, rhs)) = num_or_paren(i) {
+                lhs += rhs;
+                i = rem;
+            } else {
+                break;
+            }
+        }
+        Some((i, lhs))
+    }
+
+    // Evaluate the expression.
+    fn expr(i: &str) -> Option<(&str, usize)> {
+        // add_or_paren will evaluate any consecutive elements of the expression
+        // that are separated by '+'. This enforces that '+' has a higher order
+        // of operation than '*'.
+        let (mut i, mut lhs) = add_or_paren(i)?;
+
+        loop {
+            // The next token is expected to be '*'. Remember that all '+'
+            // operations will have already been handled by add_or_paren above.
+            i = i.trim_start();
+            if i.is_empty() || i.as_bytes()[0] != b'*' {
+                break;
+            }
+            i = &i[1..];
+            // '*' has been seen, now get the rhs of the multiplication. Using
+            // add_or_paren here again will first sum all consecutive
+            // '+' tokens prior to doing the multiplication.
+            if let Some((rem, rhs)) = add_or_paren(i) {
+                lhs *= rhs;
+                i = rem;
+            } else {
+                break;
+            }
+        }
+        Some((i, lhs))
+    }
+
+    input.split('\n').map(|line| expr(line).unwrap().1).sum()
+}

src/day19.rs

@@ -0,0 +1,103 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+use std::collections::HashMap;
+
+#[derive(Debug)]
+enum Parser<'a> {
+    Lit(&'a str),
+    Seq(Vec<usize>),
+    Alt(Vec<usize>, Vec<usize>),
+}
+
+impl<'a> Parser<'a> {
+    fn new(parser_def: &'a str) -> Option<(usize, Self)> {
+        let (idx, def) = split_once(parser_def, ": ")?;
+        let idx = idx.parse().ok()?;
+        if let Some((a, b)) = split_once(def, " | ") {
+            let a = a
+                .split(' ')
+                .map(|x| x.parse().ok())
+                .collect::<Option<Vec<usize>>>()?;
+            let b = b
+                .split(' ')
+                .map(|x| x.parse().ok())
+                .collect::<Option<Vec<usize>>>()?;
+            Some((idx, Parser::Alt(a, b)))
+        } else if let Some(_) = def.find('"') {
+            Some((idx, Parser::Lit(&def[1..def.len() - 1])))
+        } else {
+            let seq = def
+                .split(' ')
+                .map(|x| x.parse().ok())
+                .collect::<Option<Vec<usize>>>()?;
+            Some((idx, Parser::Seq(seq)))
+        }
+    }
+
+    // returns Some(remaining_input) when valid, None when doesn't match.
+    fn parse<'b>(&self, parsers: &HashMap<usize, Parser>, input: &'b str) -> Option<&'b str> {
+        match self {
+            &Parser::Lit(s) => {
+                if input.is_empty() || &input[..s.len()] != s {
+                    None
+                } else {
+                    Some(&input[s.len()..])
+                }
+            }
+            Parser::Seq(a) => {
+                let mut input = input;
+                let mut iter = a.iter().copied();
+                while let Some(parser_idx) = iter.next() {
+                    input = parsers
+                        .get(&parser_idx)
+                        .and_then(|p| p.parse(parsers, input))?;
+                }
+                Some(input)
+            }
+            Parser::Alt(a, b) => {
+                let parser_a = Parser::Seq(a.clone());
+                match parser_a.parse(parsers, input) {
+                    Some(input) => Some(input),
+                    None => {
+                        let parser_b = Parser::Seq(b.clone());
+                        parser_b.parse(parsers, input)
+                    }
+                }
+            }
+        }
+    }
+}
+
+#[aoc(day19, part1)]
+fn solve_d19_p1(input: &str) -> usize {
+    let (parser_input, pattern_input) = split_once(input, "\n\n").unwrap();
+    let parsers: HashMap<usize, Parser> = parser_input
+        .split('\n')
+        .map(|parser_def| Parser::new(parser_def).unwrap())
+        .collect();
+
+    let rule0 = parsers.get(&0).unwrap();
+    pattern_input
+        .split('\n')
+        .filter(|pattern| rule0.parse(&parsers, pattern) == Some(""))
+        .count()
+}
+
+#[aoc(day19, part2)]
+fn solve_d19_p2(input: &str) -> usize {
+    let (parser_input, pattern_input) = split_once(input, "\n\n").unwrap();
+    let mut parsers: HashMap<usize, Parser> = parser_input
+        .split('\n')
+        .map(|parser_def| Parser::new(parser_def).unwrap())
+        .collect();
+
+    parsers.insert(8, Parser::Alt(vec![42], vec![42, 8]));
+    parsers.insert(11, Parser::Alt(vec![42, 31], vec![42, 11, 31]));
+
+    let rule0 = parsers.get(&0).unwrap();
+
+    pattern_input
+        .split('\n')
+        .filter(|pattern| rule0.parse(&parsers, pattern) == Some(""))
+        .count()
+}

src/day20.rs

@@ -0,0 +1,220 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+use std::collections::HashMap;
+
+#[derive(Debug)]
+struct Tile {
+    id: usize,
+    data: [bool; 100],
+}
+impl Tile {
+    fn parse(input: &str) -> Option<Tile> {
+        let (id_line, input_data) = split_once(input, ":\n")?;
+        let (_, id) = split_once(id_line, " ")?;
+        let mut data = [false; 100];
+        for idx in input_data
+            .as_bytes()
+            .iter()
+            .cloned()
+            .filter(|&b| b != b'\n')
+            .enumerate()
+            .filter_map(|(idx, b)| if b == b'#' { Some(idx) } else { None })
+        {
+            data[idx] = true;
+        }
+        Some(Tile {
+            id: id.parse().ok()?,
+            data,
+        })
+    }
+
+    fn sides(&self) -> Vec<u16> {
+        let top = self.data[0..10]
+            .iter()
+            .cloned()
+            .enumerate()
+            .filter(|&(_, b)| b)
+            .fold(0u16, |accum, (idx, _)| accum | (1 << idx));
+        let bottom = self.data[90..100]
+            .iter()
+            .cloned()
+            .enumerate()
+            .filter(|&(_, b)| b)
+            .fold(0u16, |accum, (idx, _)| accum | (1 << idx));
+
+        let left = self
+            .data
+            .iter()
+            .step_by(10)
+            .cloned()
+            .enumerate()
+            .filter(|&(_, b)| b)
+            .fold(0u16, |accum, (idx, _)| accum | (1 << idx));
+
+        let right = self
+            .data
+            .iter()
+            .skip(9)
+            .step_by(10)
+            .cloned()
+            .enumerate()
+            .filter(|&(_, b)| b)
+            .fold(0u16, |accum, (idx, _)| accum | (1 << idx));
+
+        // Put the id's in a consistent order.
+        fn consistent_id(id: u16) -> u16 {
+            let reversed = id.reverse_bits() >> 6;
+            if id < reversed {
+                reversed
+            } else {
+                id
+            }
+        }
+        vec![
+            consistent_id(top),
+            consistent_id(right),
+            consistent_id(bottom),
+            consistent_id(left),
+        ]
+    }
+}
+
+const EXAMPLE: &str = "Tile 2311:
+..##.#..#.
+##..#.....
+#...##..#.
+####.#...#
+##.##.###.
+##...#.###
+.#.#.#..##
+..#....#..
+###...#.#.
+..###..###
+
+Tile 1951:
+#.##...##.
+#.####...#
+.....#..##
+#...######
+.##.#....#
+.###.#####
+###.##.##.
+.###....#.
+..#.#..#.#
+#...##.#..
+
+Tile 1171:
+####...##.
+#..##.#..#
+##.#..#.#.
+.###.####.
+..###.####
+.##....##.
+.#...####.
+#.##.####.
+####..#...
+.....##...
+
+Tile 1427:
+###.##.#..
+.#..#.##..
+.#.##.#..#
+#.#.#.##.#
+....#...##
+...##..##.
+...#.#####
+.#.####.#.
+..#..###.#
+..##.#..#.
+
+Tile 1489:
+##.#.#....
+..##...#..
+.##..##...
+..#...#...
+#####...#.
+#..#.#.#.#
+...#.#.#..
+##.#...##.
+..##.##.##
+###.##.#..
+
+Tile 2473:
+#....####.
+#..#.##...
+#.##..#...
+######.#.#
+.#...#.#.#
+.#########
+.###.#..#.
+########.#
+##...##.#.
+..###.#.#.
+
+Tile 2971:
+..#.#....#
+#...###...
+#.#.###...
+##.##..#..
+.#####..##
+.#..####.#
+#..#.#..#.
+..####.###
+..#.#.###.
+...#.#.#.#
+
+Tile 2729:
+...#.#.#.#
+####.#....
+..#.#.....
+....#..#.#
+.##..##.#.
+.#.####...
+####.#.#..
+##.####...
+##..#.##..
+#.##...##.
+
+Tile 3079:
+#.#.#####.
+.#..######
+..#.......
+######....
+####.#..#.
+.#...#.##.
+#.#####.##
+..#.###...
+..#.......
+..#.###...
+";
+
+#[aoc(day20, part1)]
+fn solve_d20_p1(input: &str) -> usize {
+    let tiles: Vec<_> = input
+        .split("\n\n")
+        .map(|i| Tile::parse(i).unwrap())
+        .collect();
+    let mut side_to_tile: HashMap<_, Vec<_>> = HashMap::new();
+    for tile in &tiles {
+        for side in tile.sides() {
+            side_to_tile.entry(side).or_default().push(tile.id);
+        }
+    }
+    tiles
+        .iter()
+        .filter_map(|tile| {
+            let num_unique_sides = tile.sides().iter().fold(0, |accum, side| {
+                if side_to_tile.get(&side).unwrap().len() == 1 {
+                    accum + 1
+                } else {
+                    accum
+                }
+            });
+            if num_unique_sides == 2 {
+                Some(tile.id)
+            } else {
+                None
+            }
+        })
+        .product()
+}

src/day21.rs

@@ -0,0 +1,75 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+use std::collections::{HashMap, HashSet};
+
+#[derive(Debug)]
+struct Food<'a> {
+    ingredients: HashSet<&'a str>,
+    allergens: HashSet<&'a str>,
+}
+impl<'a> Food<'a> {
+    fn parse(input: &'a str) -> Option<Self> {
+        let (ingredients, allergens) = split_once(input, " (contains ")?;
+        let allergens = allergens.strip_suffix(")")?;
+        Some(Food {
+            ingredients: ingredients.split(" ").collect(),
+            allergens: allergens.split(", ").collect(),
+        })
+    }
+}
+
+#[aoc(day21, part1)]
+fn solve_d2_p1(input: &str) -> usize {
+    //let input = EXAMPLE;
+    let foods: Vec<_> = input.split('\n').map(|l| Food::parse(l).unwrap()).collect();
+
+    let mut allergen_causes = HashMap::new();
+    for food in &foods {
+        for &allergen in &food.allergens {
+            let ingredients = allergen_causes
+                .entry(allergen)
+                .or_insert_with(|| food.ingredients.clone());
+            ingredients.retain(|ingredient| food.ingredients.contains(ingredient));
+        }
+    }
+    let possible_allergens: HashSet<_> = allergen_causes.values().flatten().collect();
+    foods
+        .iter()
+        .flat_map(|food| &food.ingredients)
+        .filter(|ingredient| !possible_allergens.contains(ingredient))
+        .count()
+}
+
+#[aoc(day21, part2)]
+fn solve_d2_p2(input: &str) -> String {
+    let foods: Vec<_> = input.split('\n').map(|l| Food::parse(l).unwrap()).collect();
+
+    let mut allergen_causes = HashMap::new();
+    for food in &foods {
+        for &allergen in &food.allergens {
+            let ingredients = allergen_causes
+                .entry(allergen)
+                .or_insert_with(|| food.ingredients.clone());
+            ingredients.retain(|ingredient| food.ingredients.contains(ingredient));
+        }
+    }
+    let mut dangerous_ingredients = Vec::new();
+    while let Some(&allergen) = allergen_causes
+        .iter()
+        .find(|(_k, v)| v.len() == 1)
+        .map(|(k, _v)| k)
+    {
+        let (allergen, mut ingredient) = allergen_causes.remove_entry(allergen).unwrap();
+        let ingredient = ingredient.drain().next().unwrap();
+        dangerous_ingredients.push((allergen, ingredient));
+        for ingredient_set in allergen_causes.values_mut() {
+            ingredient_set.remove(&ingredient);
+        }
+    }
+    dangerous_ingredients.sort_by(|(a, _), (b, _)| a.cmp(b));
+    dangerous_ingredients
+        .into_iter()
+        .map(|(_allergen, ingredient)| ingredient)
+        .collect::<Vec<_>>()
+        .join(",")
+}

src/day22.rs

@@ -0,0 +1,87 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+use std::borrow::Cow;
+use std::collections::{HashSet, VecDeque};
+
+fn deck_score(deck: VecDeque<usize>) -> usize {
+    deck.iter()
+        .rev()
+        .enumerate()
+        .map(|(idx, value)| (idx + 1) * value)
+        .sum()
+}
+
+#[aoc(day22, part1)]
+fn solve_d22_p1(input: &str) -> usize {
+    let (p1, p2) = split_once(input, "\n\n").unwrap();
+    let mut p1_deck: VecDeque<usize> = p1.split('\n').skip(1).map(|x| x.parse().unwrap()).collect();
+    let mut p2_deck: VecDeque<usize> = p2.split('\n').skip(1).map(|x| x.parse().unwrap()).collect();
+    while !p1_deck.is_empty() && !p2_deck.is_empty() {
+        let p1_value = p1_deck.pop_front().unwrap();
+        let p2_value = p2_deck.pop_front().unwrap();
+        if p1_value > p2_value {
+            p1_deck.push_back(p1_value);
+            p1_deck.push_back(p2_value);
+        } else {
+            p2_deck.push_back(p2_value);
+            p2_deck.push_back(p1_value);
+        }
+    }
+    deck_score(if p1_deck.is_empty() { p2_deck } else { p1_deck })
+}
+
+enum Winner {
+    Player1(VecDeque<usize>),
+    Player2(VecDeque<usize>),
+}
+
+#[aoc(day22, part2)]
+fn solve_d22_p2(input: &str) -> usize {
+    let (p1, p2) = split_once(input, "\n\n").unwrap();
+    let p1_deck: VecDeque<usize> = p1.split('\n').skip(1).map(|x| x.parse().unwrap()).collect();
+    let p2_deck: VecDeque<usize> = p2.split('\n').skip(1).map(|x| x.parse().unwrap()).collect();
+    match play_recursive_combat(p1_deck, p2_deck) {
+        Winner::Player1(deck) | Winner::Player2(deck) => deck_score(deck),
+    }
+}
+
+fn play_recursive_combat(mut p1_deck: VecDeque<usize>, mut p2_deck: VecDeque<usize>) -> Winner {
+    let mut previous_rounds = HashSet::new();
+    while !p1_deck.is_empty() && !p2_deck.is_empty() {
+        if previous_rounds.contains(&(Cow::Borrowed(&p1_deck), Cow::Borrowed(&p2_deck))) {
+            return Winner::Player1(p1_deck);
+        }
+        previous_rounds.insert((Cow::Owned(p1_deck.clone()), Cow::Owned(p2_deck.clone())));
+
+        let p1_value = p1_deck.pop_front().unwrap();
+        let p2_value = p2_deck.pop_front().unwrap();
+        if p1_deck.len() >= p1_value && p2_deck.len() >= p2_value {
+            match play_recursive_combat(
+                p1_deck.iter().copied().take(p1_value).collect(),
+                p2_deck.iter().copied().take(p2_value).collect(),
+            ) {
+                Winner::Player1(_) => {
+                    p1_deck.push_back(p1_value);
+                    p1_deck.push_back(p2_value);
+                }
+                Winner::Player2(_) => {
+                    p2_deck.push_back(p2_value);
+                    p2_deck.push_back(p1_value);
+                }
+            }
+        } else {
+            if p1_value > p2_value {
+                p1_deck.push_back(p1_value);
+                p1_deck.push_back(p2_value);
+            } else {
+                p2_deck.push_back(p2_value);
+                p2_deck.push_back(p1_value);
+            }
+        }
+    }
+    if p1_deck.is_empty() {
+        Winner::Player2(p2_deck)
+    } else {
+        Winner::Player1(p1_deck)
+    }
+}

src/day23.rs

@@ -0,0 +1,86 @@
+use aoc_runner_derive::aoc;
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+struct Cup(u32);
+impl Cup {
+    fn as_idx(self) -> usize {
+        self.0 as usize - 1
+    }
+
+    fn from_idx(idx: usize) -> Self {
+        Cup(idx as u32 + 1)
+    }
+}
+
+#[derive(Debug)]
+struct Cups {
+    current: Cup,
+    cups: Box<[Cup]>,
+}
+
+impl Cups {
+    fn parse(input: &[u8], total_len: usize) -> Option<Self> {
+        let mut cups = vec![Cup(0); total_len];
+        let input_iter = input.iter().map(|x| (x - b'0') as u32).chain(input.len() as u32 + 1 ..= total_len as u32);
+        for (curr, next) in input_iter.clone().zip(input_iter.cycle().skip(1)) {
+            cups[curr as usize - 1] = Cup(next as u32);
+        }
+
+        Some(Cups {
+            current: Cup((input[0] - b'0') as u32),
+            cups: cups.into_boxed_slice(),
+        })
+    }
+
+    fn do_move(&mut self) {
+        let taken_1 = self.next_cup(self.current);
+        let taken_2 = self.next_cup(taken_1);
+        let taken_3 = self.next_cup(taken_2);
+
+        let mut dest_cup =
+            Cup::from_idx((self.current.as_idx() + self.cups.len() - 1) % self.cups.len());
+        Cup(((self.current.0 as usize - 1 + self.cups.len() - 1) % self.cups.len()) as u32 + 1);
+        while dest_cup == taken_1 || dest_cup == taken_2 || dest_cup == taken_3 {
+            dest_cup = Cup::from_idx((dest_cup.as_idx() + self.cups.len() - 1) % self.cups.len());
+        }
+        self.cups[self.current.as_idx()] = self.next_cup(taken_3);
+        self.cups[taken_3.as_idx()] = self.next_cup(dest_cup);
+        self.cups[dest_cup.as_idx()] = taken_1;
+        self.current = self.next_cup(self.current);
+    }
+
+    fn next_cup(&self, cup: Cup) -> Cup {
+        self.cups[cup.as_idx()]
+    }
+
+    fn iter(&self, starting_cup: Cup) -> impl Iterator<Item = Cup> + '_ {
+        std::iter::successors(Some(starting_cup), move |&prev_cup| {
+            Some(self.next_cup(prev_cup))
+        })
+    }
+}
+
+#[aoc(day23, part1)]
+fn solve_d23_p1(input: &[u8]) -> usize {
+    let mut cups = Cups::parse(input, input.len()).unwrap();
+    for _ in 0..100 {
+        cups.do_move();
+    }
+    cups.iter(Cup(1))
+        .skip(1)
+        .take_while(|&cup| cup != Cup(1))
+        .fold(0, |accum, cup| accum * 10 + cup.0 as usize)
+}
+
+#[aoc(day23, part2)]
+fn solve_d23_p2(input: &[u8]) -> usize {
+    let mut cups = Cups::parse(input, 1_000_000).unwrap();
+    for _ in 0..10_000_000 {
+        cups.do_move();
+    }
+    cups.iter(Cup(1))
+        .skip(1)
+        .take(2)
+        .map(|x| x.0 as usize)
+        .product()
+}

src/day24.rs

@@ -0,0 +1,159 @@
+use aoc_runner_derive::aoc;
+use std::collections::HashMap;
+
+#[derive(Debug, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Hash)]
+struct Pos(isize, isize);
+impl Pos {
+    fn step(self, dir: Direction) -> Self {
+        match dir {
+            Direction::E => Pos(self.0 + 2, self.1),
+            Direction::SE => Pos(self.0 + 1, self.1 -1),
+            Direction::SW => Pos(self.0 -1, self.1 -1),
+            Direction::W => Pos(self.0 -2, self.1),
+            Direction::NE => Pos(self.0 + 1, self.1 + 1),
+            Direction::NW => Pos(self.0 -1, self.1 + 1),
+        }
+    }
+}
+
+#[derive(Debug, Copy, Clone)]
+enum Direction {
+    E,
+    SE,
+    SW,
+    W,
+    NW,
+    NE,
+}
+
+impl Direction {
+    fn parse(input: &[u8]) -> Option<(&[u8], Direction)> {
+        match input {
+            &[b's', b'e', ..] => Some((&input[2..], Direction::SE)),
+            &[b's', b'w', ..] => Some((&input[2..], Direction::SW)),
+            &[b'n', b'e', ..] => Some((&input[2..], Direction::NE)),
+            &[b'n', b'w', ..] => Some((&input[2..], Direction::NW)),
+            &[b'e', ..] => Some((&input[1..], Direction::E)),
+            &[b'w', ..] => Some((&input[1..], Direction::W)),
+            _ => None,
+        }
+    }
+
+    fn iter(input: &[u8]) -> impl Iterator<Item = Direction> + '_ {
+        struct Iter<'a>(&'a [u8]);
+        impl<'a> Iterator for Iter<'a> {
+            type Item = Direction;
+            fn next(&mut self) -> Option<Self::Item> {
+                match Direction::parse(self.0) {
+                    None => None,
+                    Some((rem, dir)) => {
+                        self.0 = rem;
+                        Some(dir)
+                    }
+                }
+            }
+        }
+        Iter(input)
+    }
+}
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+enum Tile {
+    Black,
+    White,
+}
+impl Tile {
+    fn flip(&mut self) {
+        *self = match *self {
+            Tile::Black => Tile::White,
+            Tile::White => Tile::Black,
+        };
+    }
+}
+
+#[aoc(day24, part1)]
+fn solve_d24_p1(input: &str) -> usize {
+    let mut tiles: HashMap<_, usize> = HashMap::new();
+    for pos in input.split('\n').map(|line| {
+        Direction::iter(line.as_bytes()).fold(Pos(0, 0), |pos, dir| {
+            pos.step(dir)
+        })
+    }) {
+        *tiles.entry(pos).or_default() += 1;
+    }
+
+    tiles
+        .values()
+        .filter(|&times_flipped| times_flipped % 2 == 1)
+        .count()
+}
+
+#[aoc(day24, part2)]
+fn solve_d24_p2(input: &str) -> usize {
+    let mut floor: HashMap<_, Tile> = HashMap::new();
+    for pos in input.split('\n').map(|line| {
+        Direction::iter(line.as_bytes()).fold(Pos(0, 0), |pos, dir| {
+            pos.step(dir)
+        })
+    }) {
+        floor.entry(pos).or_insert(Tile::White).flip()
+    }
+
+    for _ in 0..100 {
+        let mut tiles_visited = HashMap::new();
+        for &pos in floor.keys() {
+            run(&floor, &mut tiles_visited, pos);
+        }
+        for pos in tiles_visited
+            .into_iter()
+            .filter_map(|(k, should_flip)| if should_flip { Some(k) } else { None })
+        {
+            floor.entry(pos).or_insert(Tile::White).flip();
+        }
+    }
+
+    floor.values().filter(|&&tile| tile == Tile::Black).count()
+}
+
+fn run(
+    floor: &HashMap<Pos, Tile>,
+    tiles_visited: &mut HashMap<Pos, bool>,
+    pos: Pos,
+) {
+    if tiles_visited.contains_key(&pos) {
+        return;
+    }
+    let n = neighbors(floor, pos);
+    let black_tiles = n
+        .iter()
+        .copied()
+        .filter(|&tile| tile == Tile::Black)
+        .count();
+    let tile = floor.get(&pos).copied().unwrap_or(Tile::White);
+    if (tile == Tile::Black && (black_tiles == 0 || black_tiles > 2))
+        || (tile == Tile::White && black_tiles == 2)
+    {
+        tiles_visited.insert(pos, true);
+    } else {
+        tiles_visited.insert(pos, false);
+    }
+    if black_tiles > 0 {
+        run(floor, tiles_visited, pos.step(Direction::E));
+        run(floor, tiles_visited, pos.step(Direction::SE));
+        run(floor, tiles_visited, pos.step(Direction::SW));
+        run(floor, tiles_visited, pos.step(Direction::W));
+        run(floor, tiles_visited, pos.step(Direction::NE));
+        run(floor, tiles_visited, pos.step(Direction::NW));
+    }
+}
+
+fn neighbors(floor: &HashMap<Pos, Tile>, pos: Pos) -> [Tile; 6] {
+    [
+        floor.get(&pos.step(Direction::E)).copied().unwrap_or(Tile::White),
+        floor.get(&pos.step(Direction::SE)).copied().unwrap_or(Tile::White),
+        floor.get(&pos.step(Direction::SW)).copied().unwrap_or(Tile::White),
+        floor.get(&pos.step(Direction::W)).copied().unwrap_or(Tile::White),
+        floor.get(&pos.step(Direction::NE)).copied().unwrap_or(Tile::White),
+        floor.get(&pos.step(Direction::NW)).copied().unwrap_or(Tile::White),
+    ]
+}

src/day25.rs

@@ -0,0 +1,33 @@
+use crate::split_once;
+use aoc_runner_derive::aoc;
+
+const MOD: usize = 20201227;
+
+#[aoc(day25, part1)]
+fn solve_d25_p1(input: &str) -> usize {
+    let (pubkey1, pubkey2) = split_once(input, "\n").unwrap();
+    let pubkey1: usize = pubkey1.parse().unwrap();
+    let pubkey2: usize = pubkey2.parse().unwrap();
+    let loop_size = loop_size_from_pubkey(pubkey1);
+    encryption_key_from_pubkey(pubkey2, loop_size)
+}
+
+fn encryption_key_from_pubkey(pubkey: usize, loop_size: usize) -> usize {
+    let mut value = 1;
+    for _ in 0..loop_size {
+        value *= pubkey;
+        value %= MOD;
+    }
+    value
+}
+
+fn loop_size_from_pubkey(pubkey: usize) -> usize {
+    let mut loop_size = 0;
+    let mut value = 1;
+    while value != pubkey {
+        loop_size += 1;
+        value *= 7;
+        value %= MOD;
+    }
+    loop_size
+}

src/day5.rs

@@ -0,0 +1,78 @@
+use aoc_runner_derive::aoc;
+
+use std::fmt;
+
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd)]
+pub struct SeatId(u16);
+impl fmt::Display for SeatId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        <Self as fmt::Debug>::fmt(self, f)
+    }
+}
+
+impl SeatId {
+    fn parse(input: &[u8]) -> Option<SeatId> {
+        if input.len() != 10 {
+            return None;
+        }
+        let mut seatid = 0u16;
+
+        for b in &input[..7] {
+            let value = match b {
+                b'F' => 0,
+                b'B' => 1,
+                _ => return None,
+            };
+            seatid = (seatid << 1) | value;
+        }
+
+        for b in &input[7..10] {
+            let value = match b {
+                b'L' => 0,
+                b'R' => 1,
+                _ => return None,
+            };
+            seatid = (seatid << 1) | value;
+        }
+        Some(SeatId(seatid))
+    }
+}
+
+#[aoc(day5, part1)]
+pub fn solve_d5_p1(input: &[u8]) -> SeatId {
+    input
+        .split(|&b| b == b'\n')
+        .map(|i| SeatId::parse(i).unwrap())
+        .max()
+        .unwrap()
+}
+
+#[aoc(day5, part2)]
+pub fn solve_d5_p2(input: &[u8]) -> SeatId {
+    #[derive(Debug)]
+    struct MinMaxSum {
+        min: u16,
+        max: u16,
+        sum: u32,
+    }
+    let MinMaxSum { min, max, sum } = input
+        .split(|&b| b == b'\n')
+        .map(|i| SeatId::parse(i).unwrap())
+        .fold(
+            MinMaxSum {
+                min: u16::MAX,
+                max: 0,
+                sum: 0,
+            },
+            |MinMaxSum { min, max, sum }, seatid| MinMaxSum {
+                min: std::cmp::min(min, seatid.0),
+                max: std::cmp::max(max, seatid.0),
+                sum: sum + seatid.0 as u32,
+            },
+        );
+    let max = max as u32;
+    let min = min as u32;
+    let num_seats = max - min + 1;
+    let expected_sum = (max + min) * num_seats / 2;
+    SeatId((expected_sum - sum) as u16)
+}

src/day6.rs

@@ -0,0 +1,76 @@
+use std::iter::FromIterator;
+
+use aoc_runner_derive::aoc;
+
+/// A set that can only contain b'a'..b'z';
+struct AlphabetSet(u32);
+impl AlphabetSet {
+    pub fn new() -> AlphabetSet {
+        AlphabetSet(0)
+    }
+
+    pub fn insert(&mut self, b: u8) {
+        self.0 |= 1 << Self::char_to_bit_index(b);
+    }
+
+    pub fn len(&self) -> usize {
+        self.0.count_ones() as usize
+    }
+
+    fn char_to_bit_index(b: u8) -> usize {
+        debug_assert!(b >= b'a' && b <= b'z');
+        (b as usize - 97) & 0x1f
+    }
+}
+
+// Do a set intersection with another set.
+impl std::ops::BitAndAssign for AlphabetSet {
+    fn bitand_assign(&mut self, rhs: AlphabetSet) {
+        self.0 &= rhs.0;
+    }
+}
+
+impl FromIterator<u8> for AlphabetSet {
+    fn from_iter<I>(iter: I) -> AlphabetSet
+    where
+        I: IntoIterator<Item = u8>,
+    {
+        let mut set = AlphabetSet::new();
+        for entry in iter {
+            set.insert(entry);
+        }
+        set
+    }
+}
+
+#[aoc(day6, part1)]
+pub fn solve_d6_p1(input: &str) -> usize {
+    input
+        .split("\n\n")
+        .map(|record| {
+            record
+                .split('\n')
+                .flat_map(|line| line.as_bytes())
+                .copied()
+                .collect::<AlphabetSet>()
+                .len()
+        })
+        .sum()
+}
+
+#[aoc(day6, part2)]
+pub fn solve_d6_p2(input: &str) -> usize {
+    input
+        .split("\n\n")
+        .map(|record| {
+            let mut line_iter = record
+                .split('\n')
+                .map(|line| line.as_bytes().iter().copied().collect::<AlphabetSet>());
+            let mut group_set = line_iter.next().unwrap();
+            for set in line_iter {
+                group_set &= set;
+            }
+            group_set.len()
+        })
+        .sum()
+}

src/day7.rs

@@ -0,0 +1,167 @@
+use aoc_runner_derive::aoc;
+
+use std::collections::HashMap;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+struct BagPolicy<'a> {
+    color: &'a str,
+    contained_bags: Vec<ContainedBags<'a>>,
+}
+
+impl<'a> BagPolicy<'a> {
+    fn parse(input: &'a str) -> Option<Self> {
+        // example input:
+        // "light red bags contain 1 bright white bag, 2 muted yellow bags."
+        // "faded blue bags contain no other bags."
+        let mut iter = input.split(" bags contain ");
+        let color = iter.next()?;
+        let contained = iter.next()?;
+        if let Some(_) = iter.next() {
+            return None;
+        }
+        if contained == "no other bags." {
+            return Some(BagPolicy {
+                color,
+                contained_bags: Vec::new(),
+            });
+        }
+        let contained_bags = contained
+            .split(", ")
+            .map(|i| ContainedBags::parse(i))
+            .collect::<Option<Vec<_>>>()?;
+        Some(BagPolicy {
+            color,
+            contained_bags,
+        })
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+struct ContainedBags<'a> {
+    count: usize,
+    color: &'a str,
+}
+
+impl<'a> ContainedBags<'a> {
+    fn parse(input: &'a str) -> Option<Self> {
+        // example input: "5 faded blue bags"
+        let first_space_idx = input.find(' ')?;
+        let bag_color_end_idx = input.find(" bag")?;
+        let count = (&input[..first_space_idx]).parse().ok()?;
+        let color = &input[first_space_idx + 1..bag_color_end_idx];
+        Some(ContainedBags { count, color })
+    }
+}
+
+#[aoc(day7, part1)]
+pub fn solve_d7_p1(input: &str) -> usize {
+    // Hashmap keyed by bag color and values are a list of bags that can directly enclose that bag.
+    let mut bag_graph: HashMap<&str, Vec<&str>> = HashMap::new();
+    for bag_policy in input.split('\n') {
+        let bag_policy = BagPolicy::parse(bag_policy).unwrap();
+        for contained_bag in bag_policy.contained_bags {
+            bag_graph
+                .entry(contained_bag.color)
+                .or_default()
+                .push(bag_policy.color);
+        }
+    }
+    find_transitive_enclosing_bags(&bag_graph, "shiny gold").len()
+}
+
+fn find_transitive_enclosing_bags<'a>(
+    graph: &HashMap<&str, Vec<&'a str>>,
+    color: &str,
+) -> Vec<&'a str> {
+    fn _find_transitive_enclosing_bags<'a>(
+        graph: &HashMap<&str, Vec<&'a str>>,
+        color: &str,
+        output: &mut Vec<&'a str>,
+    ) {
+        let enclosing_colors = match graph.get(color) {
+            None => return,
+            Some(enclosing_colors) => enclosing_colors,
+        };
+        output.extend(enclosing_colors);
+        for enclosing_color in enclosing_colors {
+            _find_transitive_enclosing_bags(graph, enclosing_color, output);
+        }
+    }
+    let mut output = Vec::new();
+    _find_transitive_enclosing_bags(graph, color, &mut output);
+    output.sort();
+    output.dedup();
+    output
+}
+
+#[aoc(day7, part2)]
+pub fn solve_d7_p2(input: &str) -> usize {
+    let bag_policies = input
+        .split('\n')
+        .map(|line| {
+            let policy = BagPolicy::parse(line)?;
+            Some((policy.color, policy))
+        })
+        .collect::<Option<HashMap<_, _>>>()
+        .unwrap();
+    count_bags_inside(&bag_policies, "shiny gold")
+}
+
+fn count_bags_inside(graph: &HashMap<&str, BagPolicy>, color: &str) -> usize {
+    let policy = graph.get(color).unwrap();
+    policy
+        .contained_bags
+        .iter()
+        .map(|contained_bag| {
+            contained_bag.count * (1 + count_bags_inside(graph, contained_bag.color))
+        })
+        .sum()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parse_contained_bags() {
+        assert_eq!(
+            ContainedBags::parse("5 faded blue bags"),
+            Some(ContainedBags {
+                count: 5,
+                color: "faded blue"
+            })
+        );
+    }
+
+    #[test]
+    fn parse_bag_policy() {
+        assert_eq!(
+            BagPolicy::parse("light red bags contain 1 bright white bag, 2 muted yellow bags."),
+            Some(BagPolicy {
+                color: "light red",
+                contained_bags: vec![
+                    ContainedBags {
+                        count: 1,
+                        color: "bright white",
+                    },
+                    ContainedBags {
+                        count: 2,
+                        color: "muted yellow",
+                    },
+                ],
+            }),
+        );
+    }
+
+    #[test]
+    fn test_part2() {
+        const INPUT: &str = r#"shiny gold bags contain 2 dark red bags.
+dark red bags contain 2 dark orange bags.
+dark orange bags contain 2 dark yellow bags.
+dark yellow bags contain 2 dark green bags.
+dark green bags contain 2 dark blue bags.
+dark blue bags contain 2 dark violet bags.
+dark violet bags contain no other bags."#;
+        assert_eq!(solve_d7_p2(INPUT), 126);
+    }
+}

src/day8.rs

@@ -0,0 +1,142 @@
+use aoc_runner_derive::aoc;
+
+#[derive(Debug, Copy, Clone)]
+enum Instr {
+    Nop(isize),
+    Acc(isize),
+    Jmp(isize),
+}
+
+impl Instr {
+    fn parse(input: &str) -> Option<Instr> {
+        let space_idx = input.find(' ')?;
+        let (op, arg) = (&input[..space_idx], &input[space_idx + 1..]);
+        let arg = arg.parse().ok()?;
+        Some(match op {
+            "nop" => Instr::Nop(arg),
+            "acc" => Instr::Acc(arg),
+            "jmp" => Instr::Jmp(arg),
+            _ => return None,
+        })
+    }
+}
+
+#[derive(Debug, Clone)]
+struct BitSet(Vec<u64>);
+
+impl BitSet {
+    fn new(max_bits: usize) -> Self {
+        BitSet(vec![0; (max_bits - 1) / 64 + 1])
+    }
+
+    fn contains(&self, bit_idx: usize) -> bool {
+        let byte_idx = bit_idx / 64;
+        let bit_offset = bit_idx & 63;
+        self.0[byte_idx] & (1 << bit_offset) != 0
+    }
+
+    fn insert(&mut self, bit_idx: usize) {
+        let byte_idx = bit_idx / 64;
+        let bit_offset = bit_idx & 63;
+        self.0[byte_idx] |= 1 << bit_offset;
+    }
+}
+
+fn run_program(
+    program: &[Instr],
+    mut prev_instrs: BitSet,
+    mut pc: usize,
+    mut accum: isize,
+) -> (usize, isize) {
+    while pc < program.len() {
+        if prev_instrs.contains(pc) {
+            return (pc, accum);
+        }
+        let (new_pc, new_accum) = step(program[pc], &mut prev_instrs, pc, accum);
+        pc = new_pc;
+        accum = new_accum;
+    }
+    (pc, accum)
+}
+
+fn step(instr: Instr, prev_instrs: &mut BitSet, mut pc: usize, mut accum: isize) -> (usize, isize) {
+    prev_instrs.insert(pc);
+    pc = match instr {
+        Instr::Nop(_) => pc + 1,
+        Instr::Acc(arg) => {
+            accum += arg;
+            pc + 1
+        }
+        Instr::Jmp(arg) => (pc as isize + arg) as usize,
+    };
+    (pc, accum)
+}
+
+#[aoc(day8, part1)]
+pub fn solve_d8_p1(input: &str) -> isize {
+    let program = input
+        .split('\n')
+        .map(|line| Instr::parse(line))
+        .collect::<Option<Vec<_>>>()
+        .unwrap();
+    run_program(&program, BitSet::new(program.len()), 0, 0).1
+}
+
+#[aoc(day8, part2)]
+pub fn solve_d8_p2(input: &str) -> isize {
+    let mut program = input
+        .split('\n')
+        .map(|line| Instr::parse(line))
+        .collect::<Option<Vec<_>>>()
+        .unwrap();
+    let mut pc = 0;
+    let mut accum = 0;
+    let mut prev_instrs = BitSet::new(program.len());
+    loop {
+        match program[pc] {
+            Instr::Nop(arg) => {
+                program[pc] = Instr::Jmp(arg);
+                let (new_pc, new_accum) = run_program(&program, prev_instrs.clone(), pc, accum);
+                if new_pc == program.len() {
+                    return new_accum;
+                }
+                program[pc] = Instr::Nop(arg);
+            }
+            Instr::Jmp(arg) => {
+                program[pc] = Instr::Nop(arg);
+                let (new_pc, new_accum) = run_program(&program, prev_instrs.clone(), pc, accum);
+                if new_pc == program.len() {
+                    return new_accum;
+                }
+                program[pc] = Instr::Jmp(arg);
+            }
+            _ => {}
+        }
+        let (new_pc, new_accum) = step(program[pc], &mut prev_instrs, pc, accum);
+        pc = new_pc;
+        accum = new_accum;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_bitset() {
+        let mut bs = BitSet::new(192);
+        for bit in 0..191 {
+            assert!(!bs.contains(bit));
+        }
+        bs.insert(5);
+        assert!(bs.contains(5));
+        bs.insert(191);
+        assert!(bs.contains(191));
+        bs.insert(63);
+        assert!(bs.contains(63));
+        bs.insert(64);
+        assert!(bs.contains(64));
+        bs.insert(65);
+        assert!(bs.contains(65));
+    }
+}

src/day9.rs

@@ -0,0 +1,99 @@
+use aoc_runner_derive::aoc;
+
+use std::collections::HashSet;
+
+struct Preamble {
+    entries: [usize; 25],
+    entries_start_idx: usize,
+    set: HashSet<usize>,
+}
+
+impl Preamble {
+    // Take the first 25 items from the iterator.
+    fn new<I>(iter: &mut I) -> Option<Self>
+    where
+        I: Iterator<Item = usize>,
+    {
+        let mut entries = [0; 25];
+        let mut set = HashSet::new();
+        let mut count = 0;
+        for (idx, entry) in iter.enumerate().take(25) {
+            count += 1;
+            entries[idx] = entry;
+            set.insert(entry);
+        }
+        if count != 25 {
+            return None;
+        }
+
+        Some(Preamble {
+            entries,
+            entries_start_idx: 0,
+            set,
+        })
+    }
+
+    // Insert a new entry into the preamble letting the oldest one roll off.
+    fn insert(&mut self, entry: usize) {
+        self.set.remove(&self.entries[self.entries_start_idx]);
+        self.set.insert(entry);
+        self.entries[self.entries_start_idx] = entry;
+        self.entries_start_idx = (self.entries_start_idx + 1) % 25;
+    }
+
+    fn find_sum_pair(&self, total: usize) -> Option<(usize, usize)> {
+        for idx in 0..25 {
+            let entry = self.entries[(self.entries_start_idx + idx) % 25];
+            if entry <= total {
+                let needed = total - entry;
+                if self.set.contains(&needed) {
+                    return Some((entry, needed));
+                }
+            }
+        }
+        None
+    }
+}
+
+#[aoc(day9, part1)]
+pub fn solve_d9_p1(input: &str) -> usize {
+    let mut iter = input.split('\n').map(|x| -> usize { x.parse().unwrap() });
+    let mut preamble = Preamble::new(&mut iter).unwrap();
+    for entry in iter {
+        if preamble.find_sum_pair(entry).is_none() {
+            return entry;
+        }
+        preamble.insert(entry);
+    }
+    panic!("not found");
+}
+
+#[aoc(day9, part2)]
+pub fn solve_d9_p2(input: &str) -> usize {
+    const EXPECTED_SUM: usize = 36845998;
+    let entries: Vec<usize> = input
+        .split('\n')
+        .map(|x| -> usize { x.parse().unwrap() })
+        .collect();
+
+    let mut sum = 0;
+    let mut start_idx = 0;
+    let mut end_idx = 0;
+    loop {
+        if sum < EXPECTED_SUM {
+            sum += entries[end_idx];
+            end_idx += 1;
+        } else if sum > EXPECTED_SUM {
+            sum -= entries[start_idx];
+            start_idx += 1;
+        } else {
+            let (min, max) = &entries[start_idx..end_idx]
+                .iter()
+                .copied()
+                .fold((usize::MAX, 0), |(min, max), entry| {
+                    (std::cmp::min(min, entry), std::cmp::max(max, entry))
+                });
+            return min + max;
+        }
+    }
+}

src/lib.rs

@@ -1,6 +1,32 @@
 pub mod day1;
+pub mod day10;
+pub mod day11;
+pub mod day12;
+pub mod day13;
+pub mod day14;
+pub mod day15;
+pub mod day16;
+pub mod day17;
+pub mod day18;
+pub mod day19;
 pub mod day2;
+pub mod day20;
+pub mod day21;
+pub mod day22;
+pub mod day23;
+pub mod day24;
+pub mod day25;
 pub mod day3;
 pub mod day4;
+pub mod day5;
+pub mod day6;
+pub mod day7;
+pub mod day8;
+pub mod day9;
 
 aoc_runner_derive::aoc_lib! { year = 2020 }
+
+fn split_once<'a>(input: &'a str, delimeter: &str) -> Option<(&'a str, &'a str)> {
+    let idx = input.find(delimeter)?;
+    Some((&input[..idx], &input[idx + delimeter.len()..]))
+}

src/main.rs

@@ -0,0 +1,3 @@
+use aoc_runner_derive::aoc_main;
+
+aoc_main! { lib = aoc }