using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string[] arr = {"banana", "peach", "apple", "mango", "strawberry"};

        LinkedList<string> products = new LinkedList<string>(arr);

        while (true){

            string l = Console.ReadLine();

            if(products.Contains(l.ToLower()))

            {

                Console.WriteLine("That product is available");

            }

            else

            {

                Console.WriteLine("That product is unavailable");

            }

        }

    }

}