/input/
../
day1.in
day10.in
day11.in
day12.in
day13.in
day14.in
day15.in
day16.in
day17.in
day18.in
day19.in
day2.in
day20.in
day21.in
day22.in
day23.in
day24.in
day25.in
day3.in
day4.in
day5.in
day6.in
day7.in
day8.in
day9.in