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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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It returns score: 100 in my IDE and in online compiler, also I've tried multiple attemps and it always returns wrong on random test.
In random tests submited answer is incorrect, but when I copy test case to my IDE it works well. How to fix?