... ... ... ... .. .. ##.# ##.## #.# .###...###...###... ..#.....#.....#...# ........?.........# ..................# ..................# ..#.....#.....#..# ##...###...###. . .#.....#v....#..# ..................# ........).........# ................... ...#..(..#.....#... ..###...###...###.. ...#.....#..... ... ................ ..........∩.......