import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner scanner = new Scanner(System.in);
		int a = scanner.nextInt();
		String s = scanner.nextLine();
		if(a >= 3200){
			System.out.println(s);	
		}else if(a < 3200){
			System.out.println('red');
		}
		}
	}