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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Oh, yes I know why. Your solution has a nested while loop(a while loop inside of another while loop.) That's O(n^2) time complexity, but O(n) time complexity won't time out.
That's not the problem: you can't create a list of all the facatorials. There is a module called
from math import factorial. Also, your solution should pass, it's just that list index out of range.