package com.company;

import java.util.Scanner;
public  class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        double sum = 0;
        double price = 0;
        double coins = 0;

        while (true) {
            String input = scanner.nextLine();
            if (input.equals("Start")) {
                break;
            }
            coins = Double.parseDouble(input);

            if (coins == 0.1 || coins == 0.2 || coins == 0.5 || coins == 1 || coins == 2) {
                sum += coins;
            } else {
                System.out.printf("Cannot accept %.2f%n", coins);
            }
        }

        while (true) {
            String input = scanner.nextLine();
            if (input.equals("End")) {
                System.out.printf("Change: %.2f%n", sum);
                break;
            }
            String products = input;

            switch (products) {
                case "Nuts":
                    price = 2.0;
                    break;
                case "Water":
                    price = 0.7;
                    break;
                case "Crisps":
                    price = 1.5;
                    break;
                case "Soda":
                    price = 0.8;
                    break;
                case "Coke":
                    price = 1.0;
                    break;
                default:
                    System.out.println("Invalid product");
                    break;
            }
            if (sum >= price) {
                System.out.printf("Purchased %s%n", products);
                sum -= price;
            } else {
                System.out.println("Sorry, not enough money");
            }
        }
    }
}