aoc2025/day12/eg.txt
[7, 7, 7, 7, 7, 7]
3 rows, 0 easy, 3 maybe, 0 impossible
aoc2025/day12/input.txt
[7, 5, 7, 6, 7, 7]
1000 rows, 479 easy, 0 maybe, 521 impossible