#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,a[16],s=0;
    cin>>n;
    for (int i=0;i<=n-1;i++){
        cin>>a[i];
        s+=a[i];
    }
    double v=s*1.0/n;
    cout<<"AVE=";
    printf("%.1f",v);
    cout<<endl;
    for(int d=0;d<n;d++){
        if(a[d]>v)
        cout<<d+1<<":"<<a[d]<<" ";
        
    }
    return 0;
}
/**************************************************************
	Problem: 1155
	User: luyanchen
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/