Hello there!

Working on this task i found one bug in testing. My code, giving wrong decision on blocks like this:

((0,0,0,0,0),

(0,0,1,1,0,),

(0,1,1,1,0,),

(0,0,1,0,0,),)

and "thinking", that it is "healthy" case, had pass all tests and solution was scored. Now, of course, i fix my solution, but tests still not catch this case :)