#include<iostream>
#include<vector>
using namespace std;
int main(){
    int n;
    if(!(cin>>n))return 0;
    if(n<0){
        cout<<"Invalid input"<<endl;
    }esle if(n==0){
        cout<<0<<endl;
    }else{
        double sum=0;
        int value;
        for(int i=0;i<n;i++){
            cin>>value;
            sum+=value;
        }
        cout<<(int)(sum/n)<<endl;
    }
    return 0;
}