using System;
using System.Collections.Generic;
using System.Linq;
using static System.Console;

class Program
{
    static void Main()
    {
        var a = int.Parse(ReadLine());
        var b = int.Parse(ReadLine());
        var c = int.Parse(ReadLine());

        var s = a * 100 + b * 25 + c;
        WriteLine( s % 1000 / 100 + s % 1000 % 100 / 25 + s % 1000 % 100 % 25);
    }
}