5 7

-2 -2 -2 -2 -2 -2 -2 -2 -2 
-2  0  0 -1 -1  0  0 -1 -2
-2  0  0  0  0  0  0 -1 -2
-2 -1  0 -1  0  0 -1  0 -2
-2  0  0  0  0 -1  0  0 -2
-2  0  0  0 -1  0  0  0 -2
-2 -2 -2 -2 -2 -2 -2 -2 -2                       