public class MyClass {
    public static void main(String args[]) {
        java.util.Scanner scanner = new java.util.Scanner(System.in);
        String product = scanner.nextLine();
        if (product.equals("banana") || product.equals("apple") || product.equals("kiwi") || product.equals("cherry") || product.equals("lemon") || product.equals("grapes")) {
            System.out.print("fruit");
        } else if (product.equals("tomato") || product.equals("cucumber") || product.equals("pepper") || product.equals("carrot")) {
            System.out.print("vegetable");
        } else {
            System.out.print("unknown");
        }
    }
}