import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		sc.nextLine();
		String s = sc.nextLine();
		
		if(a < 3200) {
			System.out.println("red");
		}
		else {
			System.out.println(s);
		}
	}
}
