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

namespace Yukicoder
{
    class Program
    {
        static void Main(string[] args)
        {
            int L = int.Parse(Console.ReadLine()); //100yen
            int M = int.Parse(Console.ReadLine()); //25yen
            int N = int.Parse(Console.ReadLine()); //1yen

            int reminder = 0; //余った硬貨数

            if (N >= 25)
            {
                reminder += N % 25;
                M += N / 25;
            }
            else
            {
                reminder += N;
            }
            if (M >= 4)
            {
                reminder += M % 4;
                L += M / 4;
            }
            else
            {
                reminder += M;
            }
            if (L >= 10)
            {
                reminder += L % 10;
            }
            else
            {
                reminder += L;
            }

            Console.WriteLine(reminder);

        }
    }
}