```cpp
friend operator < (data q,data w){
if (q.w>w.w) return 1;
if (q.w<w.w) return 0;
else return q.sum>w.sum;
}
```
加个类型
```cpp
friend bool operator < (data q,data w){
if (q.w>w.w) return 1;
if (q.w<w.w) return 0;
else return q.sum>w.sum;
}
```
@[ymzqwq](/space/show?uid=6174)
by Playnext @ 2018-04-10 19:35:03
@[Playnext](/space/show?uid=51658) 谢谢！
by 夜猫子驱蚊器 @ 2018-04-10 19:57:45