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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.
but this won't be listed on solutions page right
In short, because Python is magic.
Python has no defined upper limit for integers, so as long as we stay within the realm of integers there won't be any precision issues.
It was written in python 2, where
/is integer division. Replace it with//in python 3, and it works as expected.