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

int main() {
  int N;
  cin >> N;
  vector<int> V = {1,0,0,0,1,0,1,0,2,1};
  int ans = to_string(N).size() * 2 + 1;
  while (N) ans += V.at(N % 10), N /= 10;
  cout << ans << "\n";
}