Even Chairs

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Given an integer $N$, the number of chairs. All the chairs should be placed around the square table such that: - Each of the four sides will have even number of chairs. - All the four sides have equal number of chairs. Print the number of chairs on each side else -1 if not possible. ### Input - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains

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solution.cppC++17

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