import java.util.Scanner;

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

		int a = sc.nextInt();
		String s = sc.next();

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