4
8 1 0 7 0 0 4 0 0 0
3 3 1 2 0 3 2 3 0 3
0 3 3 4 1 2 1 2 2 2
1 4 0 0 6 0 2 3 2 2
1 2 1 2 5 0 1 2 1 5
2 0 0 1 1 2 3 3 2 6
0 4 1 0 4 0 4 4 0 3
3 1 0 2 3 3 3 0 2 3