#include <iostream>
#include <algorithm>
#include <string>
using namespace std;
string s;
int main(){
  int n=0,m=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++;m++;}
    else if(s[i]=='8'){n+=2;m+=2;}
  }
  n+=(2*s.size());
  n+=1;

  m*=2;
  m+=2;
  m+=s.size();
  cout << min(n,m) << endl;
  return 0;
}