10
4 0 7 2 3 6
2 5 9 5 0 7
0 3 7 9 0 7
0 4 6 3 9 6
9 3 4 7 1 1
9 8 3 3 2 5
6 6 8 7 0 2
0 7 0 3 7 9
0 9 0 0 0 4
9 5 3 7 1 5