#include <bits/stdc++.h>
using namespace std;
using ll = long long;

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

