using System;
class Sample
{
    public static void Main()
    {
        string str = Console.ReadLine();
        string[] st = str.Split(" ");
        int a = int.Parse(st[0]);
        int b = int.Parse(st[1]);
        int c = int.Parse(st[2]);
        
        b += c / 25;
        c %= 25;

        a += b / 4;
        b %= 4;

        int d = a / 10;
        a %= 10;
        Console.WriteLine(a + b + c);
       
    }
}