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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 pass all test, but one problem is server timeout.
maybe there are shortway of formula to pass this kata, somebody give me a hint please!!!
i am using javascript anyway