import java.util.*;

public class Main {
	public static void main(String[] args) {
		// practice contest

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		String s = sc.next();
		if (a <= 3200) {
			System.out.println(s);
		}
		if (a < 3200) {
			System.out.println("red");
		}
	}
}