Maps_ex3

import java.util.*;

public class exercises_Map2 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        Map<String, Double> products = new LinkedHashMap<>();
        Map<String, Integer> productsQuanity = new LinkedHashMap<>();

        while(true){
            List<String> prodInfo = Arrays.asList(scan.nextLine().split(" "));
            if(prodInfo.contains("buy")){
                break;
            }

            String prodName = prodInfo.get(0);
            double price = Double.parseDouble(prodInfo.get(1));
            int quantity = Integer.parseInt(prodInfo.get(2));

            if(!products.containsKey(prodName)){
                productsQuanity.put(prodName, quantity);
                products.put(prodName,price*quantity);
            }
            else{
                int totalQuantityTillNow = productsQuanity.get(prodName);
                int nextQuantity = totalQuantityTillNow + quantity;
                products.put(prodName, price*nextQuantity);
                productsQuanity.put(prodName,nextQuantity);
            }
        }

        for (Map.Entry<String, Double> entry : products.entrySet()) {
            System.out.printf("%s -> %.2f%n" , entry.getKey(), entry.getValue());
        }
    }
}