public static void Main()
double berryPrice = double.Parse(Console.ReadLine());
double banana = double.Parse(Console.ReadLine());
double orange = double.Parse(Console.ReadLine());
double raspberries = double.Parse(Console.ReadLine());
double berry = double.Parse(Console.ReadLine());
double raspberriesPrice = berryPrice / 2;
double sum = CalculateSum(berryPrice, berry) + CalculateSum(raspberriesPrice - (0.8 * raspberriesPrice), banana) + CalculateSum(raspberriesPrice - (0.4 * raspberriesPrice), orange) + CalculateSum(raspberriesPrice, raspberries);
Console.WriteLine(sum.ToString("N2"));
private static double CalculateSum(double price, double quantity) {