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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.
the second issue is invalid. the kata is still solvable as of 2023; the Codewars' timeout limit is still
12 000 ms. Read the description carefully:You have to take into account the task's execution time in your delaying.