import java.util.*;
import java.lang.*;
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);
          return;
        }
      	System.out.println("red");
    }
}