做法复杂了
by sugawara @ 2023-11-12 11:37:04
set就可以了
by sugawara @ 2023-11-12 11:37:19
cin cout 太慢了，用scanf 和 printf 或快读，我就是cin 和 cout T后四个点
```
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
```
by Dtw_ @ 2023-11-27 17:57:15