2019: https://git.sr.ht/~ttt/aoc2019/tree 2018: https://git.sr.ht/~ttt/aoc18/tree 2017: https://github.com/tumdum/aoc2017 2016: https://bitbucket.org/tumdum/adventofcode2016/src/master/ 2015: https://git.sr.ht/~ttt/aoc2015/tree