import java.util.*;
import java.util.Collections;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    String s = sc.next();
    sc.close();
    if (a <= 3200) {
      System.out.println("red");
    } else {
      System.out.println(s);
    }
  }
}
