############
                #...........
    #####       #.....#.....
    #...#       #...........
  ###.#.##########@##.......
  #>.............†..........
###.###.##########.##.......
#....<........†.............
#.##>.#.######.#.#.##.#..###
#.#...#.#    #.#.#...^...#  
#.#...#(#    #.#.######..#  
#.#####.#    #.#..      .#  
#.......#    #.#..       .  
####....#    #.#...         
   #...##    #.#...∆        
   #...#       +....        
   #####