Maximise Function

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You are given a sequence $A_1, A_2, \ldots, A_N$. Find the maximum value of the expression $|A_x-A_y| + |A_y-A_z| + |A_z-A_x|$ over all triples of pairwise distinct valid indices $(x, y, z)$. ### Input - The first line of the input contains a single integer $T$ denoting the number of test cases. The description of $T$ test cases follows. - The first line of each test case contains a single in

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solution.cppC++17

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