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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.
Wait... No coffee to buy is different from there're some free coffee.
Tests contains contradictory tests.
One says if budget = 0 then return = ""
Other says if budget = 0 then return = "0"