@[暴雪海南](/space/show?uid=214912)
把您的代码做了些许修改
```cpp
#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
struct people{
int n;
int tim;
bool operator < (const people a) const{
return tim < a.tim;
}
bool operator > (const people a) const{
return tim > a.tim;
}
bool operator == (const people a) const{
return tim == a.tim;
}
}man[1010];
int sum[1010];
int main(){
int n;
double total=0;
cin >> n;
for (int i=1;i<=n;i++){
man[i].n=i;
cin >> man[i].tim;
}
sort(man+1,man+n+1);
for (int i=1;i<=n;i++){
sum[i]=sum[i-1]+man[i].tim;
cout << man[i].n << " ";
total+=sum[i-1];
}
printf("\n%.2lf\n", total/(double)n);
return 0;
}
```
by Zenurik @ 2019-07-31 09:56:17
@[暴雪海南](/space/show?uid=214912) 您错在没有考虑清楚“等待时间”的含义，您理解的等待时间是每个人接水的时间，实际上您需要对每个人的节水时间求前缀和，因为每个人的等待时间其实是排在他前面的所有人的接水时间之和
by Zenurik @ 2019-07-31 10:01:05
@[Zenurik](/space/show?uid=47996) 大谢
by 暴雪海南 @ 2019-08-02 08:57:29