摘要:
```cpp include using namespace std; typedef long long lld; const int MAXN = 50010, MAXM = 1000010, INF = 0x3f3f3f3f; struct Edge { int to, next, cap, 阅读全文
摘要:
layout: post title: 点分治是否容斥 author: "luowentaoaa" catalog: true mathjax: true tags: 数学 该图涉及的链为 $rt u\\rt u a\\rt u b\\rt v\\rt v c\\rt v d$ 还有 $a u rt 阅读全文