摘要:
layout: post title: Codeforces Round 268 (Div. 2) author: "luowentaoaa" catalog: true tags: mathjax: true codeforces 传送门 "C 24 Game" (分类讨论 构造) 思路 首先$n 阅读全文
摘要:
```cpp include using namespace std; typedef long long ll; const int maxn=6e6+50; unordered_mapm; unordered_mapp; bool vis[maxn]; int mu[maxn],sum_mu[m 阅读全文