#include<iostream>
using namespace std;

class Statistics {
    private:
    int mean;
    
    public:
    Statistics(int arr[],int n){
        int sum = 0;
        for(int i=0;i<n;i++){
            sum +=arr[i];
        } 
        mean=sum/n;
        
    }
    Statistics(const Statistics &obj){
        mean =obj.mean
            
        }
        void printMean(){
            cout<<mean;
        }
    };
    int main(){
        int n;
        if(n<0){
            cout<<"Invalid input";
            return 0;
        }
        int arr[100];
        for(int i=0;i<n;i++){
            cin>>arr[i];
        }
        Statistics s1(arr,n);
        Statistics s2=s1;
        s2.printMean();
        return 0;
    
}