10 20 5
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0
1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1
1 0 1 0 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1
1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0
6 13 3 15 1 5
3 11 5 19 10 9
1 12 4 5 9 5
5 15 6 11 3 8
1 6 7 19 3 20