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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.
Me, too. I programmed using dp, and timeout occured.
I don't know why, so I unlock solution, copy and paste the "best practice" code.
!!
The best practice code is occuring execution timeout.
I think some test cases are inproper.
So was I. There are some inputs bigger than integer. Check this first.