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");
    }

  }
}