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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 "detailed requirements" part is an outright spoiler tho. It totally strips the problem out of the problem, and all what is left is typing in a bunch of characters. I think it goes too far.
One issue I see is that negative inputs can be surprising: they are not mentioned in description, and solutions which just implement the triangle inequality theorem can get them wrong. IIRC, some languages also have inputs which trigger overflow. At the very least, ranges of inputs should be specified. Otherwise it's just getting surprised on every ATTEMPT with some new type of input.
severely?
... why?
Can you share what parts exactly you find not clear? I am willing to rewrite the kata as much as necessary, but I need to know what exactly are the problems with it.