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fix day9 overflow

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Glenn Griffin 2020-12-15 07:58:09 -08:00
parent c37bb9dd63
commit 499f6ad008
1 changed files with 5 additions and 3 deletions
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8
src/day9.rs
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@ -44,9 +44,11 @@ impl Preamble {
fn find_sum_pair(&self, total: usize) -> Option<(usize, usize)> { fn find_sum_pair(&self, total: usize) -> Option<(usize, usize)> {
for idx in 0..25 { for idx in 0..25 {
let entry = self.entries[(self.entries_start_idx + idx) % 25]; let entry = self.entries[(self.entries_start_idx + idx) % 25];
let needed = total - entry; if entry <= total {
if self.set.contains(&needed) { let needed = total - entry;
return Some((entry, needed)); if self.set.contains(&needed) {
return Some((entry, needed));
}
} }
} }
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