import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        char b = scanner.next().charAt(0);
        int a = Character.getNumericValue(b);

        switch (a) {
            case 1:
                System.out.println("one");
                break;

            case 2:
                System.out.println("two");
                break;

            case 3:
                System.out.println("three");
                    break;

            case 4:
                System.out.println("four");
                    break;

            case 5:
                System.out.println("five");
                    break;

            case 6:
                System.out.println("six");
                    break;

            case 7:
                System.out.println("seven");
                    break;

            case 8:
                System.out.println("eight");
                    break;

            case 9:
                System.out.println("nine");
                    break;
            case 0:
                System.out.println("zero");
                break;

            default:
                System.out.println("not a digit");
                break;

        }
    }
}