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2021年11月6日
The 2020 ICPC Asia Macau Regional Contest L - Random Permutation（概率期望/思维）
摘要： An integer sequence with length 𝑛n, denoted by 𝑎1,𝑎2,⋯,𝑎𝑛a1,a2,⋯,an, is generated randomly, and the probability of being 1,2,⋯,𝑛1,2,⋯,n are all 阅读全文
posted @ 2021-11-06 17:17 脂环 阅读(158) 评论(0) 推荐(0) 编辑