#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, sum, a[10000];
  cin >> n;
  sum = 0;
  for (int i = 0; i < (int)(n); i++) {
    cin >> a[i];
    sum += a[i] + 1;
  }
  cout << sum << endl;
}
