Chef and pair of stars

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There are many stars in sky and every star has certain size. Out of curiosity, Chef wants to know the pair of stars having minimum XOR value. Can you help chef finding out the same? ###Input: - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains of a two line of input, first line having one integers $n$ denoting the size of array. - Second line

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solution.cppC++17

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