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

public class Colours 
{
    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.println("2 : yellow");
	output.println("3 : cyan");
	output.println("4 : magenta");
	output.println("5 : orange");
	output.println("6 : pink");
	output.print("Enter your choice: ");
	int choice = input.nextInt();
	String result;
	switch (choice) 
	{
	case 0 : 
	    result = "red";
	    break;
	case 1 : 
	    result = "blue";
	    break;
	case 2 : 
	    result = "yellow";
	    break;
	case 3 : 
	    result = "cyan";
	    break;
	case 4 : 
	    result = "magenta";
	    break;
	case 5 : 
	    result = "orange";
	    break;
	case 6 : 
	    result = "pink";
	    break;
	default :
	    result = "invalid";
	    break;
	}
	output.println(result);
    }
}