快读
by I_will_AKIOI @ 2024-02-04 18:53:39
[谢谢大佬orzorz](https://www.luogu.com.cn/record/146145254)
by wmy18929355137 @ 2024-02-04 18:57:34
关同步流
```ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);```
by Fiendish @ 2024-02-04 18:58:37
还有 `endl` 很慢，用 `\n`
@[wmy18929355137](/user/723036)
by Fiendish @ 2024-02-04 19:01:19
orz
by wmy18929355137 @ 2024-02-04 19:42:06