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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 had fail when read the task wrong. You need to thing about the lenght and about counter of steps
100 test cases passed and 4 failed lol this is a fun question