10 2021 档案

摘要:###题目链接:https://www.luogu.com.cn/problem/UVA10652 #include<bits/stdc++.h> using namespace std; typedef long long ll; const int maxn = 5010; const doub 阅读全文
posted @ 2021-10-02 17:19 Tartarus_li 阅读(47) 评论(0) 推荐(0)
摘要:###题目链接:https://www.luogu.com.cn/problem/P3175 \(min-max\) 容斥公式 : \(max(S) = \sum\limits_{T!=\phi, T\subseteq S}(-1)^{T-1}min(T)\) \(min(S) = \sum\lim 阅读全文
posted @ 2021-10-01 21:01 Tartarus_li 阅读(73) 评论(0) 推荐(0)
摘要:###题目链接:https://codeforces.com/gym/103202/problem/M 一句话题意:求满足 \(\sum\limits_{i=1}^n \sum\limits\_{j=i+1}^{n}[a_i \oplus a_j \cap S>0] >= k\) 的集合 \(S\) 阅读全文
posted @ 2021-10-01 12:01 Tartarus_li 阅读(286) 评论(0) 推荐(0)