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