import java.util.Scanner;

class main {
	public static void main(String args[]) {
    	Scanner sc = new Scanner(System.in);
      	int a = Integer.parseInt(sc.next());
      	int s = next();
      	
      	if(a >= 3200) {
          System.out.println(s);
        } else {
          System.out.println("red");
    }
}