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