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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.
That's strange, can you post your Python solution here (with a spoiler tag)?
Can you please retry this with updated reference values from the description? (I updated them just 9 minutes ago).
The third parameter is not irrelavant and is the reason why (9,4,3) is 4 not 5
you have to satisfy both conditions
no less than bef people in front of him
and
no more than aft people behind him
as far as i can tell all the test cases are correct