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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.
Duplicate of this other kata: https://www.codewars.com/kata/55f73be6e12baaa5900000d4
Plain addition does not make a kata, not even if it's three numbers.
No random tests