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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.
That solution might be inefficient in term of speed (factor itself is quite fast, though) but is efficient in term of time invested to solve.
Hacky : yes, cheating : definitely not !