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