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

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var nn = Console.ReadLine().Split().Select(int.Parse)
                            .Select(n => n % 15 == 0 ? 8 : 
                                         n %  5 == 0 ? 4 :
                                         n %  3 == 0 ? 4 :
                                         n.ToString().Count())
                            .Sum();
            Console.WriteLine(nn);
            Console.ReadLine();
        }
    }
}