import java.util.*;

public class hasNext{
	public static void main (String args[]) {
		boolean b;
		String elements[] = {"Blue", "Grey", "Teal"};
		Set s = new HashSet(Arrays.asList(elements));
		Iterator i = s.iterator();
		if (b = i.hasNext()){
			System.out.println(b);
			}
			}
}