10
0 1 1 1 1 1 1 1 1 1
1 0 1 9 3 1 1 4 2 3
1 1 0 1 1 3 7 1 1 1
1 9 1 0 3 1 1 4 2 3
1 3 1 3 0 1 1 3 2 4
1 1 3 1 1 0 3 1 1 1
1 1 7 1 1 3 0 1 1 1
1 4 1 4 3 1 1 0 2 3
1 2 1 2 2 1 1 2 0 2
1 3 1 3 4 1 1 3 2 0
