#include <bits/stdc++.h>

using namespace std;

int main(void) {
  int n;
  cin >> n;

  int ans = 1;
  int a[] = {1, 0, 0, 0, 1, 0, 1, 0, 2, 1};
  while (n) {
    ans += a[n % 10];
    ans += 2;
    n /= 10;
  }
  cout << ans << endl;

  return 0;
}