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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.
Both fixed tests in C++ having 362 expect false. Your code is failing with negative numbers.
There are incorrect test cases for c++, a vector containing 362 is spected to be correct. (there is no number that multiplied by itself equals 362).
which is the purpose of using constexpr? (no hate, i don't know its uses :c)
nice strategy pattern jsjsjs
I like the way you use the namespace, i didn't figured out jaja. Well done!