public  class recu{



    public static int recursiveFactorial(int n){
       if (n == 0) return 1;
       else return n*recursiveFactorial(n-1);
     }    

    public static void main(String[] args )  {
     int t ;
        
          t=recursiveFactorial(6);
        System.out.println("P"+t);
    }


}