错误点：
1. 没输入n
2. as局部变量没初始化
3. 输出的是编号不是下标，差1
4. 输出有两行
by caomuyilin @ 2023-12-12 20:07:03
```cpp
#include <bits/stdc++.h>
using namespace std;
struct Node
{
int sj,id;
}a[1000];
bool cmp(Node a,Node b)
{
return a.sj<b.sj;
}
int main()
{
int n;
cin>>n;
double as=0;
for(int i=0; i<n; i++)
{
cin>>a[i].sj;
a[i].id=i;
}
sort(a,a+n,cmp);
int j=n-1;
for(int i=0; i<n; i++)
{
cout<<a[i].id+1<<" ";
as+=a[i].sj*j;
}
cout<<"\n";
printf("%.2f",as/n);
return 0;
}
```
还是0分
by qinxili @ 2023-12-12 20:13:00