import java.util.*;

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("red");
    	else 
    		System.out.println(s);
  }
}