0.25
[1, 1, 1, 1, 0, 0, 0, 0]
[1, 1, 0, 0, 0, 0, 0, 0]
[1, 0, 1, 1, 0, 0, 0, 0]
[1, 1, 1, 0, 1, 1, 0, 0]
[0, 1, 1, 1, 1, 0, 1, 1]
[[1, 1, 0, 0, 0, 0, 0, 0], [1, 0, 1, 1, 0, 0, 0, 0], [1, 1, 1, 0, 1, 1, 0, 0], [0, 1, 1, 1, 1, 0, 1, 1]]