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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.
The program works well, but at time return for some reason the line itself replaces the last 0 with 9. I even specially output the line before returning, it is ideally 100, but the function returns it as 199. C++, what the hell?