9
0 4 4 3 2 0 4 1 2 
4 0 4 0 1 1 4 2 2 
4 4 0 3 1 3 3 0 3 
3 0 3 0 2 4 0 1 3 
2 1 1 2 0 2 2 4 4 
0 1 3 4 2 0 1 2 3 
4 4 3 0 2 1 0 4 2 
1 2 0 1 4 2 4 0 3 
2 2 3 3 4 3 2 3 0 
