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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.
Print the input: https://docs.codewars.com/training/troubleshooting#print-input
A problem with your code is not a kata issue.
My code solves all three test cases provided in the task/kata. However, when I click the "submit"-button it does not solve the author's test cases, which I am not able to see. How am I supposed to solve this issue?