13. Сръбско Unleashed

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

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

        String line = scanner.nextLine();

        Map<String, Map<String, Long>> venuesWithSingersWithIncome = new LinkedHashMap<>();

        //String regex2 = "^(?<singer>[\\w\\s]+)\\s@(?<venue>[\\w\\s]+)\\s(?<price>\\d+)\\s(?<count>\\d+)$";


        while (!line.equals("End")) {

            //if (inputIsValid(line)) {
            String regex =
                    "(?<singer>[A-Za-z0-9 ]+ ?){1,3} @(?<venue>[A-Za-z0-9 ]+ ?){1,3} (?<price>\\d+) (?<count>\\d+)";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(line);

            if (matcher.find()) {
                String singer = matcher.group("singer");
                String venue = matcher.group("venue");
                int price = Integer.parseInt(matcher.group("price"));
                int count = Integer.parseInt(matcher.group("count"));
                long totalIncome = price * count;

                if (!venuesWithSingersWithIncome.containsKey(venue)) {
                    venuesWithSingersWithIncome.put(venue, new LinkedHashMap<>());
                    venuesWithSingersWithIncome.get(venue).put(singer, totalIncome);
                } else if (!venuesWithSingersWithIncome.get(venue).containsKey(singer)) {
                    venuesWithSingersWithIncome.get(venue).put(singer, totalIncome);
                } else {
                    venuesWithSingersWithIncome.get(venue)
                            .put(singer, venuesWithSingersWithIncome.get(venue).get(singer) + totalIncome);
                }

                /*venuesWithSingers.putIfAbsent(venue, new ArrayList<>());
                venuesWithSingers.get(venue).add(singer);
                singersWithIncome.putIfAbsent(singer, totalIncome);
                singersWithIncome.put(singer, singersWithIncome.get(singer) + totalIncome);*/
                //}
            }

            line = scanner.nextLine();
        }

        //#{2*space}{singer}{space}->{space}{total money}

        venuesWithSingersWithIncome.forEach((key, value) -> {
            System.out.println(key);
            value.entrySet()
                    .stream()
                    .sorted((f, s) -> {
                        long result = s.getValue() - f.getValue();
                        return (int) result;
                    })
                    .forEach(e -> {
                        System.out.printf("#  %s -> %d%n", e.getKey(), e.getValue());
                    });
        });

    }

    /*private static boolean inputIsValid(String line) {
        boolean isValid = false;
        String regex = "(?<singer>[A-Za-z0-9 ]+ ?){1,3} @(?<venue>[A-Za-z0-9 ]+ ?){1,3} (?<price>\\d+) (?<count>\\d+)";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(line);

        if (matcher.find()) {
            isValid = true;
        }

        return isValid;
    }*/
}