using System;

public class Program

{

    public static void Main()

    {

        var a = Console.ReadLine();

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

            Console.WriteLine("fruit");

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

            Console.WriteLine("vegetable");

        else Console.WriteLine("unknown");

    }

}