50 50
..................................................
....#....#.............#.#.#.....#................
.....#.........#..................................
....#..#...............#...#.......#..............
.........#........................................
..#...........#.....#.....#................#...#..
.#.....................#................#.....##..
..................................................
.................#..........#.....#.............#.
..................#.....#.......#.................
...................##.............................
...#.........##.........#...........#.............
.........#.....#..................................
...#..#.##.#..#.......#................#.....#....
............#............#.......#................
..........#....#..................#....#..........
.#...................#........................#...
...........#.........#.........#.......#.#......#.
...#..#......#.......##....................#......
.#............#.#........#.....#.............#....
........................#...............#.........
.............................##...#........#....#.
............#...#....##..#..............#..#.#.#..
...#..............................................
.....#.......#...................#...#............
.............#.......##......................#.#..
........#..##...#..#...#...........#..............
..........#.....................#.#...............
.##.........#.....................................
.......#.................#...............#...#....
.................#.#.........#....#...............
.............#..#....##.#........#..#.............
....##..#.......................#...AA............
.#...................#........#.#..AA.....#.......
..............#..#.................#.....#........
...........#.....................#...#............
..#..........#..#.................#...........#...
......#...........#......#.....#..##............#.
.............#...#..#.............................
..#...........#......#............................
.#......................................#....#....
..#.................................#........#....
.....#.......................#....#......#........
......#...............#...............#...........
....................#.....#.............#.........
.......BB...#...#...#.#..........#...........#....
......BB...#.....#...#...#...........#............
..........#.......#.........#.....................
............#...................#.....#........#..
..................................................