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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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I don't understand why there are 74 BP for an inefficent solution when there are way better solutions submitted. Not insulting the code, I did the same thing before realising the loop was unessesary.
I am getting errors in python where the answer is so big that python thinks it is +ve infinity. Anyone know how to solve this? My code completes all of the tests it can do very fast and I can see no way of making it more efficent.
You don't need the [] inside the sum(), as sum accepts a generator expression.