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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.
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Can someone please explain this problem? Surprised there is 0 comments in all the solutions as I completely don't understand the question nor answer
Yeah, I just managed to solve it in 103 ms, but got ~300 with the naive approach. Read over the question again - maybe there's a piece of information you're not using? ;)