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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.
Because your solution is too slow. How long does it run on other platforms for
n=3998733210?Your solution being too slow is not a kata issue.
"Testing for 3998733210 (No brute force solutions 🙃)"
what? why? theres no problem when i tryin it on other platform :')