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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.
That's understandable. However, BigInt has been widely supported for quite a while now, so the instructions for the Kata should probably be updated to explicitly state that BigInt is to be avoided in any solutions attempted.
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