... ##.# ... ...# .. #..# .<#..# .#..# ... #.# #.# #.# #.# .......#.# ...............#.# ....... ......#.# #.....## #...##.###### #...... +...+.......# +.....####...##.####.# #.....##..........##.# ...##.....#####.#...#....# .......<.........##.###### +##......#........#.# #......#.....#..#.# #...#+##.....#..#.# .....+.##..........# .##...#.......####### #.. #.......(....# ∆ ### #............# ##...........# #...........# ###.........# #.........# #.........# #.........# #. #.........# ....#...#+##### #.....#.# ###.#.#.# #.#.#.### #.......# #######h# .# .# ##