## ..#....    
    ..       .# .#...     
    ..#    .# .#.#... ∆   
     ..#   #   .#....     
     ##..  .   .....    ..
     #...##    #...#  ....
        ...#####.#.##.....
       #.#....#.2#........
#. ## ###......#..........
  ##.. #...###..##........
. #. .#.#..#°R.##.........
.. .##..#.°.....##........
. .#.§.....#.###.#........
...###...#.###  .#.##.....
.#  #.##..###    #.# .....
#  #  #.# #.#     ..  ... 
○...# #.○..#              
 ○R .##.#.##              
 #   ○...#                
  #..#....#