4

//
//  4.cpp
//  12
//
//  Created by Алексей on 13/05/2019.
//  Copyright © 2019 Алексей. All rights reserved.
//

#include <iostream>
#include <math.h>
#include <cmath>
#include <stdio.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    int b[n],counter=0, summ=0;
    float midi;
    for(int i=0; i<n; ++i){
        cin>>b[i];
    }
    for(int i=0; i<n; ++i){
        summ+=b[i];
    }
    for(int i=0; i<n; ++i){
        if(b[i]<=40){
            counter++;
        }
    }
    if(counter>1){
        cout<<"YES";
    }else{
        cout<<"NO";
    }
    midi=summ/n;
    cout<<midi;
}