.. .# .. #. .. #. ##. ## . . ..#...## #. . # #.#. ...#..# .###.# #≈ #.######.#..##.....# # ................... .# ##≈##................... ... . .'......C.......#..# .. ...'.......d....$..# ○. ...' ............##...# # ###### ..........#.# ..# ≈ ###..........3### # #.............#.. #......#.....###... ....#######.### ...# #.. #.# ### ..# ... .. ##. .. . ...