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

    }
}
