using System;

namespace _02._Report_System
{
    class Program
    {
        static void Main(string[] args)
        {
            int expectedSUm = int.Parse(Console.ReadLine());
            string command = null;
            int transactionsCounter = 0;
            int cash = 0;
            int transactionCash = 0;
            int card = 0;
            int transactionCard = 0;

            while ((command = Console.ReadLine()) != "End" && cash + card < expectedSUm)
            {
                int itemsPrice = int.Parse(command);

                //По условие се редуват:
                if (transactionsCounter++ % 2 == 0)//първо плащане в брой
                {
                    if (itemsPrice > 100)
                    {
                        Console.WriteLine($"Error in transaction!");
                    }
                    else
                    {
                        transactionCash++;
                        cash += itemsPrice;
                        Console.WriteLine($"Product sold!");
                    }

                }
                else //след това чрез кредитна карта
                {
                    if (itemsPrice < 10)
                    {
                        Console.WriteLine($"Error in transaction!");
                    }
                    else
                    {
                        transactionCard++;
                        card += itemsPrice;
                        Console.WriteLine($"Product sold!");
                    }
                }
            }

            if (command == "End")
            {
                Console.WriteLine($"Failed to collect required money for charity.");
            }
            else
            {
                double totalSumCash = cash * 1.0 / transactionCash;
                double totalSumCard = card * 1.0 / transactionCard;
                Console.WriteLine($"Average CS: {totalSumCash:F2}");
                Console.WriteLine($"Average CC: {totalSumCard:F2}");
            }
        }
    }
}