using System;

public class Program {
    public static void Main() {
        int n = int.Parse(Console.ReadLine()) * 100;
        n += int.Parse(Console.ReadLine()) * 25;
        n += int.Parse(Console.ReadLine());
        int coin = 0;
        n %= 1000;
        coin += n/100;
        n %= 100;
        coin += n/25;
        n %= 25;
        coin += n;
        Console.WriteLine(coin);
    }
}