public static void Main()
string mesec = Console.ReadLine();
int noshti = int.Parse(Console.ReadLine());
double apartmentCena = 0;
if (mesec == "May" || mesec == "October")
else if (mesec == "June" || mesec == "September")
else if (mesec == "July" || mesec == "August")
Console.WriteLine("Invalid month");
double totalStudioPrice = studioCena * noshti;
double totalApartmentPrice = apartmentCena * noshti;
Console.WriteLine($"Apartment: {totalApartmentPrice:F2} lv.");
Console.WriteLine($"Studio: {totalStudioPrice:F2} lv.");