02. Report System

using System;

namespace ReportSystem
{
    class Program
    {
        static void Main(string[] args)
        {
            double sum = double.Parse(Console.ReadLine());
            double cash = 0;
            double card = 0;
            int cashC = 0;
            int cardC = 0;
            int counter = 1;
            while (true)
            {
                string count = Console.ReadLine();
                if (count != "End")
                {

                    int money = int.Parse(count);

                    if ((cash + card) >= sum)
                    {
                        Console.WriteLine($"Average CS: {cash / cashC:F2}");
                        Console.WriteLine($"Average CS: {card / cardC:F2}");
                        break;
                    }
                    if (counter % 2 != 0)
                    {
                        if (money > 0 && money <= 100)
                        {
                            cash += money;
                            Console.WriteLine("Product sold!");
                            cashC++;
                        }
                        else
                        {
                            Console.WriteLine("Error in transaction!");
                        }
                    }
                    else
                    {
                        if (money > 10)
                        {
                            card += money;
                            Console.WriteLine("Product sold!");
                            cardC++;
                        }
                        else
                        {
                            Console.WriteLine("Error in transaction!");
                        }
                    }
                }
                else
                {
                    Console.WriteLine("Failed to collect required money for charity.");
                    break;
                }
                if ((cash + card) >= sum)
                {
                    Console.WriteLine($"Average CS: {cash / cashC:F2}");
                    Console.WriteLine($"Average CC: {card / cardC:F2}");
                    break;
                }
                counter++;
            }
        }
    }
}