import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    String str = scanner.next();
    
    if (a > 3200) {
    	System.out.println(str);
    } else {
    	System.out.println("red");
    }
  }
}
