#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[n];
  int sum = 0;
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
    sum += a[i] - 2000;
  }
  cout << (sum / n) + 2000;
  return 0;
}
