```cpp
else
{
int x, y;
cin >> x >> y;
e[x].push_back(edge(x, y, 0));
e[y].push_back(edge(y, x, 0));
break;
}
```
干嘛要break？
by lsw1 @ 2021-08-18 19:18:38
@[lsw1](/user/299432) 过了，感谢
by qfpjm @ 2021-08-18 19:23:21