#include <iostream>
#include <vector>
using namespace std;

int main(){
    
    int n;
    cin >> n;
    
    bool f = false;
    
    int sum = 0;
    vector <int> v;
    
    if(!(n>=1 && n<=10))
    return 0;
    
    for(int i=0;i<n;i++)
    {
         cin >> v[i];
         sum += v[i];
         
         if(!(v[i]>=0 && v[i]<=10))
         {
             f = true;
             
         }

    }
    if(f)
    }
     cout<< "Inalid input";
     return 0;
     
    }
    else
    {
        cout<< (sum/n);
        return 0;
    }