import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
		int a =scan.nextInt();
		String s = scan.next();
		scan.close();
		if(a>=3200){
			System.out.println(s);
		}else{
			System.out.println("red");
		}
	}

}