using System;
public class Program
{
    public static void Main()
    {
        int hyaku = int.Parse(Console.ReadLine() ?? string.Empty);
        int nigo = int.Parse(Console.ReadLine() ?? string.Empty);
        int one = int.Parse(Console.ReadLine() ?? string.Empty);
        //string[] num = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');

        int coin = 0;
        if(one >= 25)
        {
            int amari = one % 25;
            coin += amari;
            nigo += one / 25;
        }
        else
        {
            coin += one;
        }

        if(nigo >= 4)
        {
            int amari = nigo % 4;
            coin += amari;
            hyaku += nigo / 4;
        }
        else
        {
            coin += nigo;
        }

        if(hyaku >= 10)
        {
            int amari = hyaku % 10;
            coin += amari;
        }
        else
        {
            coin += hyaku;
        }

        Console.WriteLine("{0}",coin);


    }
}