#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,a[16],x = 0;
    cin>>n;
    for(int i=0;i<=n-1;i++)
    {
        cin>>a[i];
        x = x+a[i];
    }
    double x1=x*1.0/n;
    cout<<"AVE=";
    printf("%.1f",x1);
    cout<<endl;
    for(int i=0;i<=n-1;i++)
    {
        if(a[i] > x1)
        {
            cout<<i+1<<":";
            cout<<a[i]<<" ";
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1155
	User: wuyichen
	Language: C
	Result: Compile Error
****************************************************************/