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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.
@poltrona14 my solution is O(1) with no brute forcing involved uwu
Pls, can you show me a method that dont use brute force ?
you need to learn about recursion.