aoc_2018/input/day12.txt

initial state: ..##.#######...##.###...#..#.#.#..#.##.#.##....####..........#..#.######..####.#.#..###.##..##..#..#

#..#. => .
..#.. => .
..#.# => #
##.#. => .
.#... => #
#.... => .
##### => #
.#.## => .
#.#.. => .
#.### => #
.##.. => #
##... => .
#...# => #
####. => #
#.#.# => .
#..## => .
.#### => .
...## => .
..### => #
.#..# => .
##..# => #
.#.#. => .
..##. => .
###.. => .
###.# => #
#.##. => #
..... => .
.##.# => #
....# => .
##.## => #
...#. => #
.###. => .