import java.util.Scanner;

class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		String s = sc.next();

		if(a >= 3200) {
			System.out.println(s);
		} else {
			System.out.println("red");
		}


	}

}
