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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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There're more tests that's not shown because your solution reached the maximum allowed time before.
Try to think of a way to solve this more efficiently. There's no need to count already seen characters over and over.
This comment is hidden because it contains spoiler information about the solution