```cpp
#include<bits/stdc++.h>
using namespace std;
struct ti
{
long long id,time;
}a[1005];
int main()
{
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i].time;
a[i].id=i;
}
for(int i=1;i<n;i++)
{
for(int j=i+1;j<=n;j++)
{
if(a[i].time>a[j].time)
{
swap(a[i],a[j]);
}
}
}
long long s=0;
for(int i=1;i<=n;i++)
{
cout<<a[i].id<<' ';
s+=a[i].time*(n-i);
}
cout<<endl<<fixed<<setprecision(2)<<s*1.0/n;
return 0;
}
```
by doufive_11 @ 2018-10-04 15:39:01
我的代码
by doufive_11 @ 2018-10-04 15:39:13