setop e59e7fab23 day 2, trivial, mostly parsing		2023-12-02 13:22:44 +01:00
d01	day 1, one unclear rule prolonged part 2	2023-12-01 12:26:16 +01:00
d02	day 2, trivial, mostly parsing	2023-12-02 13:22:44 +01:00