Imagine Polygons

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Once upon a time, there was the body of all bodies. It was believed that one who could calculate its volume would have good fortune. The characteristics of the body are lost; however, it was discovered that at midday (when the Sun was directly above the body), the body's shadow on the ground was a simple polygon without self-intersections with $N$ vertices, and when the sun was setting (it illumi

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solution.cppC++17

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