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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.
Hi,
You should read the documentation about authoring, if you're interested in that. You might see why your kata isn't "welcomed" so far (no context, the task is totally articifial)
(Other than that, the expected value has to be computed first, otherwise the random tests are "vulnerable". => that's the issue part. See this documentation too)
Cheers