Computer Programming Contest Preparation

    1 3 3 4
    2 ***
    3 *N*
    4 ***
    5 DEFF
    6 4 4 5
    7 ..##
    8 *#O.
    9 *.#.
   10 *.#.
   11 FFEFF
   12 10 10 20
   13 ....*.....
   14 .......*..
   15 .....*....
   16 ..*.*.....
   17 ....N.*..*
   18 ...*......
   19 ..........
   20 ..........
   21 ..........
   22 ..........
   23 FDFFFFFFEEFFFFFFEFDF
   24 0 0 0
   25