10 10
1 0 1 0 1 0 1 0 0 1
0 0 0 0 0 0 0 0 0 0
1 0 2 0 1 0 1 0 0 1
0 0 0 0 0 0 0 0 0 0
1 0 1 0 1 0 1 0 0 1
0 0 0 0 0 0 0 0 0 0
1 0 1 0 1 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
1 0 1 0 1 0 1 0 0 1