using System;

public class Program

{

    public static void Main()

    {

    string warna;

    Console.Write("Masukkan Warna: ");

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

    if (warna == "Merah")

    {

        Console.WriteLine("Berhenti");

    }

    else if (warna == "Kuning")

    {

        Console.WriteLine("Bersiap-siap");

    }

    else if (warna == "Hijau")

    {

        Console.WriteLine("Jalan");

    }

    else

    {

        Console.WriteLine("tidak valid!");

    }

    }

}