import java.util.Scanner;
public class VendingMachine {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		String money = "";
		double result = 0.0;
		double wrongNum = 0.0;

		while(true) {
			money = sc.nextLine();
			if(money.equals("0.1") || money.equals("0.2") || money.equals("0.5")
					|| money.equals("1") || money.equals("2") ||money.equals("Start")) {
				if(money.equals("Start")) {
				break;
				}
				double num = Double.parseDouble(money);
				result = result + num;
			}else {
				System.out.printf("Cannot accept %s.",money);
				double numm = Double.parseDouble(money);
				wrongNum = numm + wrongNum;
				}


		}

		while(true) {
			money = sc.nextLine();
			if(!(money.equals("Nuts") || money.equals("Water") || money.equals("Crisps")
					|| money.equals("Soda") || money.equals("Coke") ||money.equals("End"))) {
				System.out.printf("Invalid product");
			}
			if(money.equals("End")) {
				System.out.printf("Change: %f",result + wrongNum);
			}

			if(money.equals("Nuts")) {
				if(result < 0.0){
					System.out.println("Sorry, not enough money");
					break;
				}
				result = result - 2.0;
				System.out.println("Purchased Nuts");
			}else if(money.equals("Water")){
				if(result < 0.0){
					System.out.println("Sorry, not enough money");
					break;
				}
				result = result - 0.7;
				System.out.println("Purchased Water");
			}else if(money.equals("Crisps")) {
				if(result < 0.0){
					System.out.println("Sorry, not enough money");
					break;
				}
				result = result - 1.5;
				System.out.println("Purchased Crisps");
			}else if(money.equals("Soda")) {
				if(result < 0.0){
					System.out.println("Sorry, not enough money");
					break;
				}
				result = result - 0.8;
				System.out.println("Purchased Soda");
			}else if(money.equals("Coke")) {
				if(result < 0.0){
					System.out.println("Sorry, not enough money");
					break;
				}
				result = result - 1.0;
				System.out.println("Purchased Coke");
			}

		}
	}
}