#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const long long INF = 1e+14;
const long double eps = 1e-8;
const long double pi = acos(-1.0);
void Yes() {
  cout << "Yes" << endl;
  exit(0);
}
void No() {
  cout << "No" << endl;
  exit(0);
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int N;
  cin >> N;
  int ans = 0;
  for (int i = 0; i < N; i++) {
    int a;
    cin >> a;
    ans += a;
  }
  cout << ans << endl;
  return 0;
}
