Day 24 part 1 solution.

Broken day 23 part 2.
Moved debug_println into lib.rs.

2020/src/day22.rs

@@ -372,6 +372,8 @@ use std::collections::{HashSet, VecDeque};
 
 use aoc_runner_derive::aoc;
 
+use crate::debug_println;
+
 #[derive(Clone, Debug, PartialEq)]
 struct Players {
     p1: VecDeque<usize>,
@@ -402,10 +404,6 @@ fn deck_to_str(deck: &VecDeque<usize>) -> String {
 
     s
 }
-
-macro_rules! debug_println {
-    ($($arg:tt)*) => (#[cfg(debug_assertions)] println!($($arg)*));
-}
 use std::sync::atomic::{AtomicUsize, Ordering};
 static GAME_NUM: AtomicUsize = AtomicUsize::new(1);
 impl Players {