package com.scalefocus;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        String input = "";
        double insertedCoin = 0;
        double productPrice = 0;
        double insertedSum = 0;
        double change = 0;

        while (!input.equals("Start")) {
            input = sc.nextLine();
            if (input.equals("Start")) {
                input = "Start";
            } else {
                insertedCoin = Double.parseDouble(input);
                if (insertedCoin != 0.1 && insertedCoin != 0.2 && insertedCoin != 0.5 && insertedCoin != 1 && insertedCoin != 2) {
                    System.out.printf("Cannot accept %.2f%n", insertedCoin);
                } else {
                    insertedSum += insertedCoin;
                }
            }
        }

        while (!input.equals("End")) {
            input = sc.nextLine();
            if (!input.equals("End")) {
                switch (input) {
                    case "Nuts":
                        productPrice = 2.0;
                        break;
                    case "Water":
                        productPrice = 0.7;
                        break;
                    case "Crisps":
                        productPrice = 1.5;
                        break;
                    case "Soda":
                        productPrice = 0.8;
                        break;
                    case "Coke":
                        productPrice = 1.0;
                        break;
                    default:
                        System.out.println("Invalid product");
                        break;
                }

                if (insertedSum - productPrice < 0) {
                    System.out.println("Sorry, not enough money");
//                    else if (input.equals("Nuts") || input.equals("Water") || input.equals("Crisps") || input.equals("Soda") || input.equals("Coke")
                } else if (input.matches("Nuts|Water|Crisps|Soda|Coke")) {
                    System.out.println("Purchased " + input);
                    insertedSum = insertedSum - productPrice;
                }
            }
        }
        System.out.printf("Change: %.2f", insertedSum);
    }

}