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