import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
      
        if (a >= 3200) {
          System.out.println(sc.next());
        } else {
          System.out.println("red");
        }
	}
}