using System;

public class Program

{

    public static void Main()

    {

        string warna ;

        Console.WriteLine("Masukkan Warna: ");

        warna = Convert.ToString(Console.ReadLine());

        if (warna == "merah")

        { 

            Console.WriteLine("Berhenti");

        }

        else if (warna == "kuning")

        {

            Console.WriteLine("Bersiap");

        }

        else if (warna == "hijau")

        {

            Console.WriteLine("Jalan");

        }

        else

        {

            Console.WriteLine("Tidak Valid");

        }

    }

}