import org.pureprogrammer.Utils;

public class Selection4 {

	public static void main(String[] args) {
		final int x = Utils.stoiWithDefault(args[0], 0);
		switch (x) {
			case 1:
				System.out.println("One");
				break;
			case 2:
				System.out.println("Two");
				break;
			case 3:
			case 4:
				System.out.println("Three or Four");
				break;
			default:
				System.out.println("Just don't know!");
				break;
		}
	}
}