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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.
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Would be harder with larger input and though time limit.
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But the test cases don't actually check if an error is thrown.
My code passes the test but fails when I want to submit it. Any hints on which input parameters I need to expect? I believe it my code should work for positive integers.