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