package TopCoder;

import java.util.Scanner;

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