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