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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 timed out as well with this same solution. How did this one pass I wonder?
Depending on how you begin your problem solving thinking, it can either be a 4 kyu or actually a 6
It took 4 hours to me with python. Nice kata, but not for 6kyu
I tried this one and it gave me time out error. Seems an inefficient way to do it?