Counting Hexagons

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Dexter wants to make a hexagon by using six sticks for sides from a collection of sticks of lengths 1, 2, 3, ... N. Dexter will only make valid hexagons whose area is strictly positive. He considers a hexagon "good" if the biggest stick has length at least L and lengths of all the other sticks are not more than X. A "good" hexagon does not have sticks of the same length more than K times. How

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solution.cppC++17

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