using System;
 
class ABBA
{
    static int Factorial(int n)
    {
        if(n==1) return 1;
        return n * Factorial(n-1);
    }
 
    public static void Main()
    {
        System.Console.WriteLine("ABBA");
        System.Console.Write("Enter number of Vowels:");
        string s = Console.ReadLine();
        int vowels = int.Parse(s);
 
        System.Console.Write("Enter number of Consonants:");
        s = System.Console.ReadLine();
        int consonants = int.Parse(s);
 
        Console.WriteLine(Factorial(vowels) * Factorial(consonants));
    }
}