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