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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.
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You're right!
My solution passed the tests so i didn't search more.
You should suggest "test cases edits" to KK20994 (this kata's Sensei)
Hi, I don't think your solution works well when continued multiplication occurs, you can test the following case:
, whose output should be 130 but not 'undefined'.