#  
                   ##########     ....  
                   .......<.#####.....  
                   ...........).......  
                   ...................  
   #          ..   ##+#+###..####+####  
   #.        ....         #5)#          
   #.########....         #).#          
   +..$...........        #o.#          
   +..^.........%.        #..#          
   #..........#....       ...#          
   #...<...........      .....          
   #.....o...#.#..      .......         
   #..............     ...##+##.        
 .....###...#.#.#..   ....     ..       
......#...#.......#  .....      ..      
..#+###.#...#.>.#..                     
.    .....#.......#                     
   .........#.#.#..                     
   .......#.... ...                     
   .......#.. .# ..                     
    ......#.. ..  .                     
    #...  #... .. ∆