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