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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.
My solution didn't pass one of the test cases. Expected: 168, instead got: 470. But I can't see what are the parameters for the test case. Is there any way to see it? It would help me to figure out, what I did wrong.