#include<bits/stdc++.h>
using namespace std;
int n,s;
int main(){
    cin>>n;
    int a[20];
    for(int i=1;i<=n;i++){
        cin>>a[i];
        s=s+a[i];
         
    }
    float v=s*1.0/n;
    printf("AVE=%.1f\n",v);
    for(int i=1;i<=n;i++){
        if(a[i]>v) cout<<i<<":"<<a[i]<<" ";
    }
}
/**************************************************************
	Problem: 1155
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/