```cpp
int join(int u,int v){
ufs[find(u)]=find(v);
}
```
by dengyaotriangle @ 2020-01-28 18:16:12
`runtime error: execution reached the end of a value-returning function without returning a value`
by dengyaotriangle @ 2020-01-28 18:17:20
@[dengyaotriangle](/user/62598) oh ** 好吧
by momo5440 @ 2020-01-28 18:17:54