import java.util.*;

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("red");
		}else {
			System.out.println(s);
		}
	}
}