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ACM Association Insider Programming Contest 1ItemValueContest Length3hDefault...
题目链接https://codeforces.com/gym/102769/problem/F题目大意教授有$n$个好学生,想带其中一些参加一个会议(也可...
StatementBasketball is a well known sport that everybody loves it, so does ss...
题源牛客2020暑假多校第六场B题。题目大意对于$n$个$n$维Binary Vector,求向量组线性无关的概率。推导过程由于其线性无关,易得公式:$f...
本文讨论的是一道数学题,源自牛客2020暑假多校第一场J题。基本目标即对于积分$I=\int_{0}^{1}(x-x^2)^ndx=\frac{p}{q}...