Orz
by Inorganic_Chemistry @ 2020-08-16 23:47:30
~~第一眼看钉钉精神（doge~~
by 吴勉之 @ 2020-08-16 23:59:29
@[吴勉之](/user/143925)
钉子精神（x）
钉钉精神（√）
by B_1168 @ 2020-08-18 00:55:03
咦我昨天的贴没发上来？
by peterwuyihong @ 2020-08-18 08:32:28
$luogu$日爆
by peterwuyihong @ 2020-08-18 08:32:48
```cpp
dfn[x]=++cnt;
if(siz[x]==0)return;
dfs2(son[x],y);
```
中间这行写错了，导致了树状数组下标炸了，$maxn$开大能$A$也是奇了怪了
by peterwuyihong @ 2020-08-18 08:34:06