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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.
This breaks at the example 10100000000 (timeout)
plus 9 is quite clever
Yeah, I did that! took some time to observe this though after first attempt(using itertools permutations) timed out on larger numbers.
wow, smart
Congratulationso on solving!
Note that your question is not really answerable wihout mentioning in which language you're solving the kata, because test frameworks differ in showing partial results or not. Also, the answer to your question could have been "yes, there is a pathological case for your solution" because we don't know your solution. Help us help you!