# .. .## ## ## .... #.#.##∩.... ###.....#.#. #..#.##....$ .# #......#.... ...# ###.#..#.#.. .#..?#...∩...# # .......#...#.##. ..#...$3....... #...#...#....... .#.....#?....#... ....... ..3...... ....... ........ ....... ........ .#..... .....#.. ##...# #...###.