qw(1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 X X 0) -> 75 should be 65 qw(9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 / X) -> 111 should be 101 qw(X X X X X X X X X X X X) -> 330 should be 300 qw(0 / X 0 / X 0 / X 0 / X 0 / X 0 /) -> 210 should be 200