#include <iostream>
#include <string>
using namespace std;
string s;
int main(){
  int n=0;
  cin >> s;
  for(int i=0;i<s.size();i++){
    if(s[i]=='0' || s[i]=='4' || s[i]=='6' || s[i]=='9')n++;
    else if(s[i]=='8')n+=2;
  }
  n+=(2*s.size());
  n+=1;
  cout << n << endl;
  return 0;
}