#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[11]={0},i,h=0;
	float p;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		h=h+a[i];
	}
	p=h/n*1.0;
	printf("AVE=%.1f\n",p);
	for(i=0;i<n;i++){
		if(a[i]>p){
			cout<<i+1<<":"<<a[i]<<" ";
		}
	} 
	return 0;
}

/**************************************************************
	Problem: 1155
	User: linyuhang
	Language: C++
	Result: Wrong Answer
****************************************************************/