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题号 状态 题目名称 通过率
CF66D Petya and His Friends
CF66E Petya and Post
CF67A Partial Teacher
CF67B Restoration of the Permutation
CF67C Sequence of Balls
CF67D Optical Experiment
CF67E Save the City!
CF68A Irrational problem
CF68B Energy exchange
CF68C Synchrophasotron
CF68D Half-decay tree
CF68E Contact
CF69A Young Physicist
CF69B Bets
CF69C Game
CF69D Dot
CF69E Subsegments
CF70A Cookies
CF70B Text Messaging
CF70C Lucky Tickets