Runtime Error
foo.cc: In function 'int unite(int, int)':
foo.cc:26:1: warning: no return statement in function returning non-void [-Wreturn-type]
26 | }
| ^
[Hydro](https://hydro.ac)提供评测服务
foo.cc: In function 'int unite(int, int)':
foo.cc:26:1: warning: no return statement in function returning non-void [-Wreturn-type]
26 | }
| ^
[Hydro](https://hydro.ac)提供评测服务
