Oh well. You're right. But it's Python.

what's wrong with it running in O(n)?.

The instructions said nothing of that!

I've seen this in almost every code posted for this. Which would be the best way to complete this task if not these?

That's...geometric...

This is a level 8 challenge. Beginner level. As a beginner I don't even know what O(n) is : /

relax bud

Thank you so much :) That's so kind :)
I wanted the code to be performant, not just to do the naive approach of "add-everything-then-do-modulo" ;) Instead I aimed to save on computational complexity and on memory.
In hindsight, I should have used a hashset instead of a tuple for the "odds", but it's such a small set, it probably doesn't matter.

Anyway, thanks again :)

as clean as it gets amazing code respect

@fakeID I'm sorry, I don't follow. What do you mean?

two plus two is four
minus one that's three, quick maths

Please use spoiler flag next time.