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

namespace test20190423
{
    class Program
    {
        static void Main(string[] args)
        {
            Func<int> read = () => int.Parse(Console.ReadLine());

            var x1 = read();
            var x25 = x1 / 25;
            x1 = x1 % 25;

            x25 += read();
            var x100 = x25 / 4;
            x25 = x25 % 4;

            x100 += read();
            var x1000 = x100 / 10;
            x100 = x100 % 10;
            
            Console.WriteLine(x100 + x25 + x1);
            Console.ReadLine();
        }
    }
}