Java

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //LinkedHashMap<String, Double> linkedHashMap = new LinkedHashMap<>();
        List<String> list = new ArrayList<>();
        double total = 0.00;

        String command;
        while (!"Purchase".equals(command = sc.nextLine())) {
            Pattern regex = Pattern.compile(">>([A-Za-z\\s]+)<<(\\d+\\.?\\d+)!(\\d+)");
            //Pattern regex = Pattern.compile("([A-Za-z\\s]+)<<(\\d+(.\\d+)?)!(\\d+)");
            Matcher matcher = regex.matcher(command);

            if (matcher.find()) {
                String furniture = matcher.group(1);
                double price = Double.parseDouble(matcher.group(2));
                int quantity = Integer.parseInt(matcher.group(3));
               // if(linkedHashMap.containsKey(furniture)){
                //    linkedHashMap.put(furniture, linkedHashMap.get(furniture)+(price * quantity));
              //  }
               // linkedHashMap.putIfAbsent(furniture, price * quantity);
                list.add(furniture);
                total += quantity * price;
            }

        }
        //double totalSum;
        System.out.println("Bought furniture:");
        //linkedHashMap.forEach((key, value) -> System.out.printf("%s%n", key));
       // totalSum = linkedHashMap.values().stream().mapToDouble(e -> e).sum();
       // System.out.printf("Total money spend: %.2f", totalSum);
        list.stream().forEach(e-> System.out.printf("%s%n", e));
        System.out.printf("Total money spend: %.2f", total);
    }
}