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) {
			s = "red";
		}

		System.out.println(s);
		
		

	}

}