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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.
Fixed the test case in python. Oh, and people just hardcoded the wrong solution for that test...
How are there solutions without any hack for the last test case?