using System;

namespace yukicoder
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] p = { 1, 0, 0, 0, 1, 0, 1, 0, 2, 1 };
            string n = Console.ReadLine();
            int l = n.Length;
            int ans = 1;
            for (int i = 0; i < l; i++)
            {
                ans += p[n[i] - '0'];
            }
            Console.WriteLine(Math.Min(ans + 2 * l, ans * 2 + l));
        }
    }
}