using System;

public class Hello
{
    public static void Main()
    {
        var s = Console.ReadLine().Trim();
        var sL = s.Length;
        var hole = 0;
        foreach (var x in s)
            if (x == '0' | x == '4' | x == '6' | x == '9') hole += 1;
            else if (x == '8') hole += 2;
        var m1 = 2 + 2 * hole + sL;
        var m2 = 1 + hole + 2 * sL;
        Console.WriteLine(Math.Min(m1, m2));
    }
}