15
T...##....#..#.
.#.....#.......
.#......#...#.#
..........#...#
..#.#.#........
.....##...#...#
.....#......#..
#..#..#........
#....#..#..#.#.
#..#...........
.....#......#..
.#.#.....#.....
....#....#.....
....#....#.##..
.#............T
