https://github.com/uvg/AdventOfCode/tree/master/2020/COS

Well...my solutions are in COS.

Working on a bignum solution (also in COS) for the last code of part2 in day 22.

You can check my code at

https://github.com/uvg/AdventOfCode

Couldn't make day 18 and part 2 of day 25 (because of not completing day 18)

Also couldn't find a cos code for bignum so the last calculations of part2 in day22 were made in an external calculator