#include <iostream>
#include <string>
#include <cstdint>
using namespace std;
#define repi(i,n) for(int i=0; i<(n); i++)
#define repd(i,n) for(int i = n; i >= 0; i--)

int main() {
  int N;
  int64_t x, sum = 0;
  cin >> N;

  repi(i,N) {
    cin >> x;
    sum += x;
  }

  cout << sum << endl;
  return 0;
}