using System;

​

public class Program

{

    public static void Main()

    {

        string product = Console.ReadLine();

        if (product == "banana" || product == "apple" || product == "kiwi" || product == "cherry" || product == "lemon" || product == "grapes")

        {

            Console.WriteLine("fruit");

        }

        else if (product == "tomato" || product == "cucumber" || product == "pepper" || product == "carrot")

        {

            Console.WriteLine("vegetable");

        }

        else

        {

            Console.WriteLine("unknown");

        }

    }

}