
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int a = sc.nextInt();
			String s = sc.next();

			if (3200 <= a) {
				System.out.println(s);
			} else {
				System.out.println("red");
			}
		}
	}
}
