Harry and Prisoner of Azkaban

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This one is a simpler one !. Harry wants to find Prisoner of Azkaban, but he is known to be hidden in any one of the "Marsh" in the ground. The garden is rectangular and has lamp posts with post score assigned to them.( Like matrix elements ). Harry only has one magic trick which he applies to find 2 numbers, X and Y which denotes the upper-limit and lower-limit of the "Marsh Score" where Azkaba

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solution.cppC++17

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