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(3200 <= a) {
			System.out.print(s);
		}else {
			System.out.print("red");
		}
		
		sc.close();
	}
}
