Read a little more carefully. We are NOT counting the number of times the ball was seen falling. You are correct that if the validity conditions are met, that the function should return 1 at a minimum.

decent kata. The naive solution is trivial but there's at least a little thought required for the O(1) solution. My biggest complaint is the 'Note.'
Just why? I don't understand why we're not counting the number of times the ball touches the z=window plane.

You don't need to be a magician: https://docs.codewars.com/training/troubleshooting/#print-input

why don't codewars show all the test cases so we can see what goes wrong where and investigate? That's a great learning curve. Currently if noone in the comments points out what it could be, how am I supposed to know? FYI I'm not a magician.

so what's your question?

of course it is. Every cata cretaed by g964 should be 1kyu. If you figure out what he means in his convoluted description, you right away deserve senior position at FAANG company.

If I answered you wouldn't understand: I'm too confusing.

Genuine question for g964 - all your katas have the lowest approval rate and the most hate in the comments.
Your excercises are by a mile the most confusing - why can't you do 'normal' katas like others?
I definitely don't buy anything like 'well if you know how to program you wouldn't have a problem' - you are the only one doing katas this way. Long weird scenarios that will never happen. Curious as to how you choose to be that way, perhaps I'm missing something.

As others have said, trying to understand this description is pure pain, pass for me.
waiting for the creator now to say 'bUt ThOuSaNdS oF pEoPlE sOlVeD iT'.
Cool buddy, you do you.

Oh girls just wanna have fun...

true, nobody should write code this way except if you want to have fun, and girls, they wanna have fun

honestly horrible, no one should attempt to write this way. Forced one liners that make it impossible to read.