@[Charlie_zs](/user/1109640) 比较器改一下：
```cpp
bool cmp( student a , student b )
{
return a.num > b.num || (a.num == b.num && a.id < b.id);
}
```
by heyx0201 @ 2023-11-19 15:42:49
感谢大佬！！！
by Charlie_zs @ 2023-11-19 15:49:10