import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a = in.nextInt();
        in.nextLine();
        String s = in.nextLine();

        if(a <= 3200){
            System.out.println(s);
        } else{
            System.out.println("red");
        }
    }
}