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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.
XD
All complain are about mistaken testcases or problems with the presition, am I the only one who got stuck with Execution Timed Out? u.u
LOL you should add this coment to issues.
Try to run your code outside codewars, there might be a "tab" that the codewars compiler does not detect. Once you are sure the sintaxis is correct, copy back to codewars.