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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.
wonderful,the code is very elegant
if you calculate n times,algorithm complexity will be at least O(n).so try to find a pattern,solve it in constant time.
very nice kata,but I think it's almost impossible to complete this task if not having mathematical knowledge about congruence.