Rectangle Query

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You are given a Cartesian plane, and you are asked to support the following three kinds of operations: - I x1 y1 x2 y2: add an axes-parallel rectangle on the plane. The bottom-left corner has coordinates (x1, y1), the top-right one has coordinates (x2, y2) - D index: remove the retangle that was added during the index-th addition operation - Q x1 y1 x2 y2: output the number of rectangles on the

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solution.cppC++17

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