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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.
We do not know this either, and without seeing your code, we cannot tell why it is wrong.
Infinite loop overloading their code runner, run it on your computer to help see what's making the loop
Read this: https://docs.codewars.com/training/troubleshooting/#print-input you have an inifinite recursive loop.