#include<bits/stdc++.h>
using namespace std;
int main(){
		int i,z=0,a[11]={0},n;
	    float p=0;	
		cin>>n;
		for(i=0;i<n;i++){
			cin>>i;
			z=z+a[i];
		}
		p=z/n*1.0;
		printf("AVE=%.1f/n",p);
		for(i=0;i<n;i++){
			if(a[i]>p){
				cout<<i+1<<":"<<a[i];
        	}
		}
	}
/**************************************************************
	Problem: 1155
	User: huxuanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/