C. Coprime-Free Permutation - 2019 年 “游族杯” 上海市高校程序设计邀请赛 (同步赛) - ECNU Online Judge

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单点时限: 6.0 sec

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A. As Much As 996 B. Black Peter C. Coprime-Free Permutation D. Distinct Tautonyms E. ECNU MNIST F. Foreigners’ Trouble G. Green-Red Tree H. Huashui Clock I. Induced Metric Space J. Josephus Problem K. Keyboard without Binary Digits L. Liwa River