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