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");
		}
	}
}