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

namespace 競プロ
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            Count100 = int.Parse(s);

            s = Console.ReadLine();
            Count25 = int.Parse(s);

            s = Console.ReadLine();
            Count1 = int.Parse(s);

            Count1000 = 0;

            // 1円 → 25円
            while (Count1 >= 25)
            {
                Count1 -= 25;
                Count25++;
            }

            // 25円 → 100円
            while (Count25 >= 4)
            {
                Count25 -= 4;
                Count100++;
            }

            // 100円 → 1000円
            while (Count100 >= 10)
            {
                Count100 -= 10;
                Count1000++;
            }

            int res = Count1 + Count25 + Count100;
            Console.WriteLine(res.ToString());


            Console.ReadLine();
        }

        private static int Count1, Count25, Count100, Count1000;
    }
}