7. Food Delivery

using System;

namespace FoodDelivery
{
internal class Program
{
    static void Main(string[] args)
    {
        int chickenMenuAmount = int.Parse(Console.ReadLine());
        int fishMenuAmount = int.Parse(Console.ReadLine());
        int vegeterianMenuAmount = int.Parse(Console.ReadLine());

        double chickenMenu = 10.35;
        double fishMenu = 12.40;
        double vegeterianMenu = 8.15;

        double chickenPrice = chickenMenuAmount * chickenMenu;
        double fishPrice = fishMenuAmount * fishMenu;
        double vegeterianPrice = vegeterianMenuAmount * vegeterianMenu;

        double totalMenuPrice = chickenPrice + fishPrice + vegeterianPrice;

        double desertPrice = 0.2 * totalMenuPrice;
        double deliveryPrice = 2.50;

        double totalPrice = totalMenuPrice + desertPrice + deliveryPrice;
        Console.WriteLine(totalPrice);
    }
}
}