摘要： Leonardo's NotebookTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 1514Accepted: 645Description— I just bought Leonardo's secret notebook! Rare object collector Stan Ucker was really agitated but his friend, special investigator Sarah Kepticwas unimpressed. — How do you know it is g 阅读全文

摘要： CARDSTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 1033Accepted: 544DescriptionAlice and Bob have a set of N cards labelled with numbers 1 ... N (so that no two cards have the same label) and a shuffle machine. We assume that N is an odd integer. The shuffle machine accepts the set of car 阅读全文