萌新都是怪物系列……
by Jameswood @ 2018-12-01 09:26:48
@[假装老船长](/space/show?uid=32831) orz
by memset0 @ 2018-12-01 09:32:59
@[假装老船长](/space/show?uid=32831) OrzXXCjulao
by vocaloid @ 2018-12-01 09:43:27
@[假装老船长](/space/show?uid=32831) OrzXXCjulao
by VenusM1nT @ 2018-12-01 09:43:53
刚学OI就动态树 Orz
by decoqwq @ 2018-12-01 09:46:44
这样判断边的存在是不对的。。。得用map
```cpp
bool Hasedge(int x, int y)
{
Query(x, y);
return c[y].son[0] == x;
}
```
我的锅
by 吹雪吹雪吹 @ 2018-12-01 09:47:11
@[假装老船长](/space/show?uid=32831) LCTjulao%%%
by VenusM1nT @ 2018-12-01 09:52:00
刚学OILCT警告
by Fading @ 2019-01-28 10:21:13