#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,a[10];
	float u=0;
	cin>>n;
	for(int i=0;i<=n-1;i++){
		cin>>a[i];
		u+=a[i];
	}
	u/=n;
	printf("AVE=" "%.1f" "\n",u);
	for(int q=0;q<=n-1;q++){
		if(a[q]>u){
			cout<<q+1<<":"<<a[q]<<" ";
		} 
	}
	return 0;
}
/**************************************************************
	Problem: 1155
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/