import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        double sum = 0;
        String in;
        String pls;

        do {
            in = sc.nextLine();
            if (in.equals("0.1") || in.equals("0.2") || in.equals("0.5") || in.equals("1") || in.equals("2")) {
                sum += Double.parseDouble(in);
            } else if (!"Start".equals(in)){
                System.out.printf("Cannot accept %.2f",Double.parseDouble(in));
                System.out.println();
            }
        }
        while (!"Start".equals(in));
        do {
            pls = sc.nextLine();
            switch (pls) {
                case "Nuts":
                    if (sum >= 2.0) {
                        sum -= 2.0;
                        System.out.println("Purchased " + pls);
                    } else {
                        System.out.println("Sorry, not enough money");
                    }
                    break;
                case "Water":
                    if (sum >= 0.7) {
                        sum -= 0.7;
                        System.out.println("Purchased " + pls);
                    } else {
                        System.out.println("Sorry, not enough money");
                    }
                    break;
                case "Crisps":
                    if (sum >= 1.5) {
                        sum -= 1.5;
                        System.out.println("Purchased " + pls);
                    } else {
                        System.out.println("Sorry, not enough money");
                    }
                    break;
                case "Soda":
                    if (sum >= 0.8) {
                        sum -= 0.8;
                        System.out.println("Purchased " + pls);
                    } else {
                        System.out.println("Sorry, not enough money");
                    }
                    break;
                case "Coke":
                    if (sum >= 1.0) {
                        sum -= 1.0;
                        System.out.println("Purchased " + pls);
                    } else {
                        System.out.println("Soory, not enought money");
                    }
                    break;
                default:if(!"End".equals(pls))
                    System.out.println("Invalid product");
                    break;
            }
        }
        while(!"End".equals(pls));
        System.out.printf("Change: %.2f",sum);
    }
}