........+      
   ........#  #   
   ........##.#   
     .......#.#   
      ........    
     ###....# ..#.
######......#.....
#...##.....s....).
#...##.....Y......
#.................
#...##............
#...##.........##.
#...##.........#  
#...##.........#  
#<..##.......).#  
#...##.........#  
#...##.........   
#..<#             
#####             
                  
                  
                  
                  
      ∆