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