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");
	}
	if (choice == 1) 
	{
	   output.println("blue");
	}
   }
}