#include <iostream>
int main() {
int n;
std::cin >> n;
if (n < 1) {
return 0;
}
int *sensor=new int[n];
// Write your dynamic buffer allocation code here
// *sensor=*sensor/n;
int sen=0;
for(int i=0;i<n;i++)
{
// a=sensor[i]+a;
// sen=a/n;
std::cin>>sensor[i];
sen=sen+sensor[i];
}
int average =sen/n;
std::cout<<average;
delete[] sensor;
return 0;
}