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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.
simple and persice, I like it
Hint:
"If I were to buy 9 cars costing c each, I'd only have 1 Zloty left."
"And if I were to buy 7 boats at b each, I'd only have 2 Ringglets left."
Cool, but stringstream is slow
@Reno could you please explin how do you get (i%7) & (i%9) idea