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

int main() {
  int N;
  long long sum = 0;
  cin >> N;
  vector<long long> A;
  for (int i = 0; i < N; i++) {
    long long num;
    cin >> num;
    A.push_back(num);
    sum += num;
  }
  cout << sum << endl;
  return 0;
}