import java.util.*;
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner stdIn = new Scanner(System.in);
		int a = stdIn.nextInt();
		String s = stdIn.next();
		if(a>=3200){
			System.out.println(s);
		}else{
			System.out.println("red");
		}
	}

}
