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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.
solved
it turned out i needed 'Using'... kingda imports
stupid challenge couldn't do rounding to finish. used different methods and discovered :>>
src/Solution.cs(12,20): error CS0103: The name 'Double' does not exist in the current context
something like this. tryed different methods that also don't work.
if it is not bugged and challenge it is real then it could be written in description.
py, timeout eror, I think it's serverse's problem because I can't think of a way to optimize my code.