Advent of Code 2020 - Day 13

I'm continuing to stream Advent of Code 2020! Here's day 13. Went quite well today - 22/3.

Nice work, finally I know how you guys are so quick. Before the Day 13 I had no idea there is something like Chinese Remainder Theorem. And you had prepared it from before :D

[yawarjamal]

I'd call this Chinese Copypasta Theorem ;)