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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.
Your current code is wrong and fails the second sample test, start over from scratch. Sometimes it helps.
The expected answer (see the sample tests when in doubt) is a number:
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