9
6
5 4 1 0 4 0
4 0 1 2 0 5
0 5 0 0 5 0
0 0 4 0 1 0
0 0 4 0 0 2
0 5 0 0 0 1
4 0 0 0 2 0
0 4 0 0 1 0
1 0 0 0 0 0
