import java.util.*;
import java.io.*;

public class A {
	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);
	}
}
