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