.. .. .. #. # #. ##### ... #. #...# ∆ .....#.####...####### ...........O......... ∆ .....#.####.(.###### ##### ... ... +....# #...# . ..#.. #....####################.#.# ... #.. #.........................#.# (. ##> ###################.......#.# # #. ∆ #......#.#####.#.# #. #......#.# #.#.# #....###.#####.#.# #..............#.##### #.....##.#######.#...# #.....#........#.#.#.# #.....#..#####.#.#.#.# #.....#..#####.#.#.#.# #.....#........#.#.#.# #.....#.########.#.#.# #.##))#.#####..#.#.#.# #.#<[.#........#.#.#.# #.###.########.#.#.#.# #..............#.#.#.# #####.##########.#.#.# #.#............#.# #.#.########.###.## #...# #......# ##### #.###### ###