package BasicsSyntax;

import java.util.Scanner;

public class VendingMachine {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        String input = scanner.nextLine();
        double coinSum = 0;
        while (!input.equals("Start")) {
            double coins = Double.parseDouble(input);
            if (coins == 0.1 || coins == 0.2 || coins == 0.5 || coins == 1 || coins == 2) {
                coinSum += coins;
            } else {
                System.out.printf("Cannot accept %.2f", coins);
            }
            input = scanner.nextLine();


            while (!input.equals("End")) {
                String product = input;
                double price = 0;
                if (product.equals("Nuts")) {
                    price = 2.0;
                } else if (product.equals("Water")) {
                    price = 0.7;
                } else if (product.equals("Crisps")) {
                    price = 1.5;
                } else if (product.equals("Soda")) {
                    price = 0.8;
                } else if (product.equals("Coke")) {
                    price = 1.0;
                } else {
                    System.out.println("Invalid product");
                }
                if (coinSum >= price) {
                    System.out.printf("Purchased %s", input);
                    coinSum -= price;
                } else {
                    System.out.println("Sorry, not enough money");
                }
                input = product;
            }

        }
        System.out.printf("Change:%.2f", coinSum);
    }
}