using System;

public class Program

{

    public static void Main()

    {

        string product = Console.ReadLine(); 

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

        {

            Console.WriteLine("fruit"); 

        }

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

            Console.WriteLine("vegetable"); 

        } 

        else

        {

            Console.WriteLine("unknow");