#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i;
	float s=0;
	cin>>n;
	int m[10];
	for(i=0;i<n;i++){
		cin>>m[i];
		s+=m[i];
	}
	s/=n;
	printf("AVE=%.1f\n",s);
	for(i=0;i<n;i++){
		if(m[i]>s){
			cout<<i+1<<":"<<m[i]<<" ";
		}
	}
	return 0;
}

/**************************************************************
	Problem: 1155
	User: zzz
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2076 kb
****************************************************************/