Terrible vectors

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You are given an integer N. Consider a vector a of length N2 accessible via 0-based indexing. Let's call the following transformation a TVT-transformation (Terrible Vector transformation). We will call a vector g a good vector if For some reason, you want to find a vector a of length N2 such that it's elements are either 1 or -1 and after applying TVT-transformation (i.e. b), it results in a go

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solution.cppC++17

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