Help the Refugees!!

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After the kargil war ended, the Pakistani refugees run to India. The India government in support provide a safe place for them which is rectangular piece of land, surrounded by the fence. The safe place can be considered as a $2D$ grid which consists of $N$ rows and $M$ columns. There are rivers flowing in the grid in the following manner:- There are $X$ rivers flowing in a horizontal direc

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solution.cppC++17

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