4 Commits

Author	SHA1	Message	Date
David	c09e706d42	empty struct instead of bool for better memory usage	2021-12-12 13:29:41 -05:00
David	137cfd379b	don't need the top-level waitgroup	2021-12-12 13:07:36 -05:00
David	c2a087abf7	memorize the double-room check on day two	2021-12-12 13:05:45 -05:00
David	6fe9d251bd	day 12	2021-12-12 13:03:33 -05:00