import java.io.PrintStream;
import java.util.Scanner;

public class RedOrBlue {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		PrintStream output = System.out;

		output.println("0 : red");
		output.println("1 : blue");
		output.print("Enter your choice: ");
		int choice = input.nextInt();
		if (choice == 0) {
			output.println("red");
		} else {
			output.println("blue");
		}
	}
}