#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: dengyuanyan
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/