import java.util.*;
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		String s = sc.next();
		if(a < 3200) {
			s = "red";
		}
		
		System.out.println(s);
	}

}
