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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.
Stimes they change the tests for kata.
exactly. what the hell is maximum subarray sum? haha. terribly worded
I thought the same, but was my fault, check again or ask us a question.
The official test is ok.
Try print the bill value and you'll see your error.