自己觉的一点问题都没有啊
by kaikaihapppy @ 2022-10-27 18:26:02
请问你的cmp函数后为什么要加分号？
by Mr_Vatican @ 2022-10-27 18:48:54
```cpp
#include <iostream>
#include <algorithm>
using namespace std;
struct water {
int num , time;
} p[1010];
bool cmp(water a , water b){
if (a.time != b.time)
return a.time < b.time;
return a.num < b.num;
};//就是这里
int n , sum = 0 ;
int main(){
scanf("%d",&n);
for (int i = 1 ; i <= n ; i ++){
scanf("%d",&p[i].time);
p[i].num = i ;
}
sort(p +1 , p + n + 1 , cmp);
for (int i = 1 ; i <= n ; i ++){
printf("%d ",p[i].num);
sum += i * p[n-i].time;
}
printf("\n%.2lf\n",1.0 * sum / n);
return 0;
}
```
by Mr_Vatican @ 2022-10-27 18:50:20
好吧上面的是废话
by Mr_Vatican @ 2022-10-27 18:54:06
然而有无分号都没有问题吧
by lsj2009 @ 2022-10-27 18:59:26
好像书上的代码错了（不是有意冒犯）
by Mr_Vatican @ 2022-10-27 19:08:25
把sum改成double类型，书上代码错了，我刚也是WA82
by 16David @ 2022-12-01 12:32:58
@[16David](/user/809784) 好的好的，蟹蟹大佬
by kaikaihapppy @ 2022-12-14 00:24:25
@[cyz0816](/user/852295) 没吧
by ninji @ 2023-03-05 22:12:42
@[renzhoutong](/user/927666)
by ZHOUJIECHEN @ 2023-03-26 15:05:20