#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using pii = pair<int, int>;

int main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);
  cout << fixed << setprecision(10);

  int n;
  cin >> n;
  ll sum = 0;
  for (int i = 0; i < n; i++) {
    int v;
    cin >> v;
    sum += v;
  }
  cout << sum / n << endl;

  return 0;
}
