你好！
```
struct Edge {
int v, c, next;
}a[maxn];
```
应改为
```
struct Edge {
int v, c, next;
}a[maxm];
```
by Eason_wu @ 2023-12-05 22:26:16
@[Eason_wu](/user/367998) 谢谢大佬，没注意，出了个小错误T_T
by zuoqirun @ 2023-12-09 19:13:29