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