#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[10],n,i,s=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		s=s+a[i];
	}		
	double v=s*1.0/n;
	printf("AVE=%.1f\n",v);
	for(i=0;i<n;i++){
		if(a[i]>v) cout<<i+1<<":"<<a[i]<<" ";
	}
	
}
/**************************************************************
	Problem: 1155
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2076 kb
****************************************************************/