public static void Main()
var sum = double.Parse(Console.ReadLine());
var gender = Console.ReadLine();
var age = int.Parse(Console.ReadLine());
var sport = Console.ReadLine();
if (sport == "gym") price = 42.00;
else if (sport == "boxing") price = 41.00;
else if (sport == "yoga") price = 45.00;
else if (sport == "zumba") price = 34.00;
else if (sport == "dances") price = 51.00;
else if (sport == "pilates") price = 39.00;
if (sport == "gym") price = 35.00;
else if (sport == "boxing") price = 37.00;
else if (sport == "yoga") price = 42.00;
else if (sport == "zumba") price = 31.00;
else if (sport == "dances") price = 53.00;
else if (sport == "pilates") price = 37.00;
if (age < 19) price -= price * 20 / 100;
if (sum > price) Console.WriteLine("You purchased a 1 month pass for {0}.", sport);
else if (sum < price) Console.WriteLine("You don't have enough money! You need ${0:f2} more.", price - sum);