using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;

public class Program
{
    public static void Main(string[] args)
    {
        new Magatro().Solve();
    }
}

class Magatro
{

    public void Solve()
    {
        var s = Console.ReadLine();
        int ans = s.Length * 2 + 1;
        int ans2 = s.Length;
        int ana = 0;
        foreach (char c in s)
        {
            switch (c)
            {
                case '0':
                case '4':
                case '6':
                case '9':
                    ana++;
                    break;
                case '8':
                    ana += 2;
                    break;
            }
        }

        Console.WriteLine(Math.Min(ans+ana,ans2+(ana+1)*2));
    }
}