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("red");
			}
			else {	
				System.out.println(s);
			}	
	 }
