/2020/
../
day01-1.sh
day01-2.sh
day02.c
day03.c
day04-1.sh
day04-2.sh
day05.c
day06.c
day07.c
day08.c
day09.c
day10.c
day11.c
day12.c
day13.c
day14.c
day15.c
day16.c
day17.c
day18.c