07. AndreyAndBilliard

using System;
using System.Collections.Generic;
using System.Linq;

namespace _07.AndreyAndBilliard
{
    class Customer
    {
        public string Name { get; set; }
        public Dictionary<string, double> ShopList { get; set; }
        public double Bill { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, double> shop = new Dictionary<string, double>();

            int amountEntities = int.Parse(Console.ReadLine());
            ReadShopSupply(shop, amountEntities);

            List<Customer> listOfCustomers = new List<Customer>();
            double totalBill = ReadCustomersDesires(shop, listOfCustomers);

            PrintResult(listOfCustomers, totalBill);
        }

        private static void ReadShopSupply(Dictionary<string, double> shop, int amountEntities)
        {
            for (int i = 0; i < amountEntities; i++)
            {
                string[] input = Console.ReadLine().Split('-');
                string product = input[0];
                double priceProduct = double.Parse(input[1]);
                if (!shop.ContainsKey(product))
                {
                    shop.Add(product, 0);
                }
                shop[product] = priceProduct;
            }
        }

        private static double ReadCustomersDesires(Dictionary<string, double> shop, List<Customer> listOfCustomers)
        {
            double totalBill = 0;

            while (true)
            {
                Customer newCustomer = new Customer();
                string input = Console.ReadLine();
                if (input == "end of clients") break;
                var input1 = input.Split(',', '-').ToArray();
                string name = input1[0];
                string wantedProduct = input1[1];
                double wantedQuantity = double.Parse(input1[2]);

                if (!shop.ContainsKey(wantedProduct)) continue;

                else
                {
                    newCustomer.Name = name;
                    newCustomer.ShopList = new Dictionary<string, double>();
                    newCustomer.ShopList.Add(wantedProduct, wantedQuantity);
                    newCustomer.Bill += wantedQuantity * shop[wantedProduct];
                    totalBill += wantedQuantity * shop[wantedProduct];
                    listOfCustomers.Add(newCustomer);
                }
            }
            return totalBill;
        }

        private static void PrintResult(List<Customer> listOfCustomers, double totalBill)
        {
            var result = listOfCustomers.OrderBy(x => x.Name);
            foreach (var customer in result)
            {
                Console.WriteLine($"{customer.Name}");
                foreach (KeyValuePair<string, double> item in customer.ShopList)
                {
                    Console.WriteLine($"-- {item.Key} - {item.Value}");
                }
                Console.WriteLine($"Bill: {customer.Bill:f2}");
            }
            Console.WriteLine($"Total bill: {totalBill:f2}");
        }
    }
}