using System;

class Program
{
    static void Main()
    {
        int a = int.Parse(Console.ReadLine());
        int b = int.Parse(Console.ReadLine());
        int c = int.Parse(Console.ReadLine());
        b += c / 25;
        c = c % 25;
        a += b / 4;
        b = b % 4;
        a = a % 10;
        Console.WriteLine($"{a + b + c}");
    }
}