5 10
1 1 1 1 1 0 1 1 1 1
1 1 1 1 1 0 1 1 1 1
1 1 1 1 1 1 0 1 0 1
1 1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1 1