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Problem ID Title Solved Submit Pass Rate
4671Recover Polygon (hard)
cf690B32600datastructures
000.0%
4672Recover Polygon (medium)
cf690B22600geometry
000.0%
4673Recover Polygon (easy) 恢复多边形（简单）
cf690B11700思维
8988.9%
5790Inna, Dima and Song
cf390B
11100.0%