#include<iostream>
#include<vector>
using namespace std;
int main(){
int n;
if(!(cin>>n))return 0;
if(n<0){
    cout<<"Invalid input"<<endl;
}
else 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;
}