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.nextString();
      
      	if(a >=3200){
          System.out.println(s);
        }else if(a < 3200){
			System.out.println('red');
        }
 	}
}