Bro, I tried the same thing but they showed me error! donno why!

Thanks. I see.

The input can't be 13.

and there is no 13th floor (due to superstition)

What if the input is 13? Then it doesn't even work. How can this be top solution? :D

I appreciated:

1. the spacing
2. that 13 as an input wasn't even considered! :-D

Very clear!

The last if is not really necessary, simply return n-2 would do.

But of course, "explicit is better than implicit", so the solution is good as is ;-)

FYI: Instead of True if condition else False you can write condition or (if condition is bool-ish and you need a boolean type) bool(condition).