import java.util.*;
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");
		}
	}
}