12
7
39
-10
0  5  4  3  0  0  0  25  26  27  0  0
7  6  0  2  1  0  23  24  0  28  29  0
8  0  0  0  -10  0  22  0  0  0  30  0
9  0  0  0  0  20  21  0  0  0  31  0
10  0  0  0  18  19  0  0  0  0  32  0
11  12  0  16  17  0  39  0  0  34  33  0
0  13  14  15  0  0  38  37  36  35  0  0