#     #####     
  #.#   ....      
.##.#.  #..       
 .....  #.#       
  #...###.#       
  #.......#####...
  #..............[
  #.###.##.#####. 
 ∆    #.##.#      
      #.##@#      
      #@##.#####. 
  #.###..........#
 ........<)...####
 .#.##.######.... 
     #.      .....
 ∆   ..   ∆   ....
    ...        ###
   ###.