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

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            int thousand = 0;
            int hundred = 0;
            int twentyfive = 0;
            int one = 0;
            string l = Console.ReadLine();
            hundred = int.Parse(l);
            string m = Console.ReadLine();
            twentyfive = int.Parse(m);
            string n = Console.ReadLine();
            one = int.Parse(n);

            while(one>=25)
            {
                twentyfive++;
                one = one - 25;
            }
            while(twentyfive>=4)
            {
                hundred++;
                twentyfive = twentyfive - 4;
            }
            while(hundred>=10)
            {
                thousand++;
                hundred = hundred - 10;
            }
            int ans = one + twentyfive + hundred ;
            Console.WriteLine(ans);
        }
    }
}