Cow Picker

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Due to the massive increase of cows in JEC's campus, Principal now wants to chase them out, The field behind the admin block is divided into a grid of WxW size and at some cells of the grid there are cows, Principal wants to remove exactly 4 in such a way that the 4 cows form a rectangle in the grid. if the grid is like . x . . x . x x . . x . . . . . x x . x . . . . . where x denote

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solution.cppC++17

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