 20 17 7
1 0 0 0 1 0 0 0 1 1 0 1 0 0 0 0 1 1 0 0
 9 13 15
 10 19 20
 9 19 20
 4 10 19
 4 13 18
 1 3 14
 1 6 19
 4 11 18
 1 7 8
 5 11 20
 13 14 17
 2 10 11
 2 8 12
 12 16 20
 8 10 11
 3 4 5
 1 6 14
