import java.util.*;

class Main {
  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);
    }
  }
}