Report_System

using System;

namespace Report_System
{
    class Program
    {
        static void Main(string[] args)
        {
            int neededMoney = int.Parse(Console.ReadLine());

            int cashCounter = 0;
            int cardCounter = 0;
            int paymentCounter = 0;

            double payCash = 0;
            double payCard = 0;

            while (neededMoney > 0)
            {
                string input = Console.ReadLine();
                if (input == "End")
                {
                    Console.WriteLine("Failed to collect required money for charity.");
                    return;
                }
                else
                {
                    int money = int.Parse(input);
                    paymentCounter++;
                    if (paymentCounter % 2 == 1)
                    {
                        if (money > 100)
                        {
                            Console.WriteLine("Error in transaction!");
                            continue;
                        }
                        cashCounter++;
                        payCash += money;
                        neededMoney -= money;
                        Console.WriteLine("Product sold!");
                        continue;

                    }
                    else
                    {
                        if (money < 10)
                        {
                            Console.WriteLine("Error in transaction!");
                            continue;
                        }
                        cardCounter++;
                        payCard += money;
                        neededMoney -= money;
                        Console.WriteLine("Product sold!");
                        continue;
                    }
                }

            }
            double averageCash = payCash / cashCounter;
            double averageCard = payCard / cardCounter;

            Console.WriteLine($"Average CS: {averageCash:F2}");
            Console.WriteLine($"Average CC: {averageCard:F2}");

        }
    }
}