21 19
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 0 1
1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 0 1 0 1 0 1 0 1 1 1 0 1
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1
1 0 0 0 1 0 1 1 1 0 1 1 1 0 1 0 0 0 1
1 0 1 1 1 0 1 3 3 0 3 3 1 0 1 1 1 0 1
1 0 0 0 1 0 1 1 1 1 1 1 1 0 1 0 0 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 0 1 0 1 0 1 0 1 1 1 0 1
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 1 1 2 1 1 1 0 1 1 1 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1