using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace payingSystem_while_more_
{
    class Program
    {
        static void Main(string[] args)
        {
            int expectedSum = int.Parse(Console.ReadLine());
            int totalSum = 0;
            int cashPay = 0;
            int cardPay = 0;
            int couter = 0;
            int cashCouter = 0;
            int cardCouter = 0;

            do
            {
                string command = Console.ReadLine();
                if (command == "End")
                {
                    break;
                }

                else
                {
                    int payment = int.Parse(command);
                    couter++;
                    if (couter % 2 == 0)
                    {
                        if (payment <=10)
                        {
                            Console.WriteLine("Error in transaction!");
                        }

                        else
                        {
                            Console.WriteLine("Product is sold!");
                            cardCouter++;
                            cardPay += payment;
                        }
                    }

                    else
                    {
                        if (payment >= 100)
                        {
                            Console.WriteLine("Error in transaction!");
                        }

                        else
                        {
                            Console.WriteLine("Product is sold!");
                            cashCouter++;
                            cashPay += payment;
                        }
                    }
                    totalSum = cashPay + cardPay;
                }

            } while (totalSum < expectedSum);

            if (expectedSum <= totalSum)
            {
                Console.WriteLine($"Average CS: {cashPay / cashCouter:f2}");
                Console.WriteLine($"Average CS: {cardPay / cardCouter:f2}");
            }

            else
            {
                Console.WriteLine("Failed to collect required money for charity.");
            }

        }
    }
}