I'm confused by this test:

Fail:'' ( Test Fail: Input:

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

return

[3, 5]

instead

[3, 3]

)

I don't see any way to connect the stations by length = 3. Is it a mistake in the test?

Thanks!