Maximum Sub-rectangle in Matrix

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You are given a matrix of the size H × W with integer elements. So it has H rows and W columns. The rows are numbered by integers in the range [0, H – 1] while for the columns the range [0, W – 1] is used. Your task is to find out a sub-rectangle of this matrix with a large sum. The sum of a sub-rectangle is the sum of all its elements. However, sub-rectangle does not need to be contig

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solution.cppC++17

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