using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string command = "";


            double sumMonets = 0;
            double restMoney = 0;
            double monets1 = 0;
            double sumMonetsCanNotAccepts = 0;
            double sumNotEnoughtMoney = 0;

            int counterCannotAccept = 0;
            int counterNevalidenProduct = 0;
            int counterCoke = 0;
            int counterNuts = 0;
            int counterWater = 0;
            int counterCrisps = 0;
            int counterSoda = 0;
            int counterNotEnoughtMoney = 0;

            double sumCoke = 0;
            double sumNuts = 0;
            double sumWater = 0;
            double sumCrisps = 0;
            double sumSoda = 0;




            while (command != "Start")
            {
                string monets = Console.ReadLine();

                if (monets == "Start")
                {
                    break;
                }

                monets1 = double.Parse(monets);

                if (monets1 == 0.1 || monets1 == 0.2 || monets1 == 0.5 || monets1 == 1 || monets1 == 2)
                {
                    sumMonets += monets1;
                }

                else
                {
                    counterCannotAccept++;
                    sumMonetsCanNotAccepts = monets1;
                }

            }



            string products = "";

            while (products != "End")
            {
                products = Console.ReadLine();

                if (products == "Coke")
                {
                    if (sumMonets < 1.00)
                    {
                        counterNotEnoughtMoney++;
                        sumNotEnoughtMoney = 1.00 - sumMonets;
                        continue;

                    }

                    counterCoke++;
                    sumCoke = 1.00 * counterCoke;
                    sumMonets -= sumCoke;

                }

                else if (products == "Nuts")
                {
                    if (sumMonets < 2.00)
                    {
                        counterNotEnoughtMoney++;
                        sumNotEnoughtMoney = 2.00 - sumMonets;
                        continue;



                    }
                    counterNuts++;
                    sumNuts = 2.00 * counterNuts;
                    sumMonets -= sumNuts;

                }

                else if (products == "Water")
                {
                    if (sumMonets < 0.70)
                    {
                        counterNotEnoughtMoney++;
                        sumNotEnoughtMoney = 0.70 - sumMonets;
                        continue;

                    }

                    counterWater++;
                    sumWater = 0.70 * counterWater;
                    sumMonets -= sumWater;

                }

                else if (products == "Crisps")
                {
                    if (sumMonets < 1.50)
                    {
                        counterNotEnoughtMoney++;
                        sumNotEnoughtMoney = 1.50 - sumMonets;
                        continue;

                    }

                    counterCrisps++;
                    sumCrisps = 1.50 * counterCrisps;
                    sumMonets -= sumCrisps;

                }

                else if (products == "Soda")
                {

                    if (sumMonets < 0.80)
                    {
                        counterNotEnoughtMoney++;
                        sumNotEnoughtMoney = 0.80 - sumMonets;
                        continue;

                    }

                    counterSoda++;
                    sumSoda = 0.80 * counterSoda;
                    sumMonets -= sumSoda;

                }

                else if (products == "End")
                {
                    break;
                }

                else
                {
                    counterNevalidenProduct++;
                }

            }




            if (counterCannotAccept > 0)
            {
                for (int i = 0; i < counterCannotAccept; i++)
                {
                    Console.WriteLine($"Cannot accept {sumMonetsCanNotAccepts}");
                }
            }


            if (counterNevalidenProduct > 0)
            {
                for (int i = 0; i < counterNevalidenProduct; i++)
                {
                    Console.WriteLine("Invalid product");
                }

            }



            if (counterCoke > 0)
            {
                for (int i = 0; i < counterCoke; i++)
                {
                    Console.WriteLine("Purchased coke");
                }
            }

            if (counterWater > 0)
            {
                for (int i = 0; i < counterWater; i++)
                {
                    Console.WriteLine("Purchased water");
                }

            }

            if (counterCrisps > 0)
            {
                for (int i = 0; i < counterCrisps; i++)
                {
                    Console.WriteLine("Purchased crisps");
                }

            }

            if (counterSoda > 0)
            {
                for (int i = 0; i < counterSoda; i++)
                {
                    Console.WriteLine("Purchased soda");
                }
            }

            if (counterNuts > 0)
            {
                for (int i = 0; i < counterNuts; i++)
                {
                    Console.WriteLine("Purchased nuts");
                }
            }


            if (counterNotEnoughtMoney > 0)
            {
                for (int i = 0; i < counterNotEnoughtMoney; i++)
                {
                    Console.WriteLine("Sorry, not enough money");
                }

            }



            Console.WriteLine($"Change: {Math.Abs(sumMonets):f2}");

        }
    }
}