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

	}
}
	

/**************************************************************
	Problem: 1155
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/