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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.
great solution! i like how the count was calculated directly as you went with each prime factor
what the
the row and col checks are much cleaner than what i did, great solution
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love this solution