@[Belarus](/space/show?uid=223392)
```if(get(fa[i])==get(fa[j]))```这里应该是```if(get(fa[upper[i]])==get(fa[lower[j]]))```叭
by 0nullptr @ 2019-10-28 14:14:13
`signed main()` 是什么鬼
by Hjcc @ 2019-10-28 14:14:20
@[一个python屑](/space/show?uid=82672) 哦!谢谢dalao%%%%%
by Belarus @ 2019-10-28 14:15:54
@[侯嘉诚](/space/show?uid=189435) 是一个神奇的东西
by Belarus @ 2019-10-28 14:16:57
@[Belarus](/space/show?uid=223392) 和`int main()`有什么区别
by Hjcc @ 2019-10-28 14:20:26
@[侯嘉诚](/space/show?uid=189435) #define int long long的时候用的
这个不是基本技巧吗?
by Algha_Porthos @ 2019-10-28 14:21:51
@[自动AK机](/space/show?uid=53058) 直接把`int`删掉不就好了吗。。。
by Hjcc @ 2019-10-28 14:23:42
@[侯嘉诚](/space/show?uid=189435) 有这种操作??
by Belarus @ 2019-10-28 14:26:33
@[侯嘉诚](/space/show?uid=189435)
你直接写一个main不符合C++的语法啊qwq
by 0nullptr @ 2019-10-28 14:29:39
~~建议重学C++~~
by Belarus @ 2019-10-28 14:32:40