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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.
I don't know which programming language you are using, but it is likely one of those where you can easily return a tuple.
You need to return a string, which consists of the two numbers separated by a single space.