Squarified

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You are given an array $A$ of length $N$. An array $B$ is considered *squarified*, if: - The product of the elements in any even-length [subsequence](https://en.wikipedia.org/wiki/Subsequence) of $B$ is a [perfect square](https://en.wikipedia.org/wiki/Perfect_square), and; - The product of the elements in any odd-length subsequence of $B$ is **not** a perfect square. Your task is to find the l

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solution.cppC++17

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