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Intersection Points

CSESGeometryOpen on judge ↗

Given n horizontal and vertical line segments, your task is to calculate the number of their intersection points. You can assume that no parallel line segments intersect, and no endpoint of a line segment is an intersection point. Input The first line has an integer n: the number of line segments. Then there are n lines describing the line segments. Each line has four integers: x_1, y_1, x_2 a

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solution.cppC++17

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