Ranking

import java.util.*;

public class Ranking {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Map<String, String> contestsAndPass = new LinkedHashMap<>();
        Map<String, Map<String, Integer>> userContestPoints = new TreeMap<>();

        String input = scanner.nextLine();
        while (!input.equals("end of contests")) {
            String[] contests = input.split(":");
            String contest = contests[0];
            String password = contests[1];
            contestsAndPass.put(contest, password);

            input = scanner.nextLine();
        }
        String submission = scanner.nextLine();
        while (!submission.equals("end of submissions")) {
            String[] subm = submission.split("=>");
            String contestName = subm[0];
            String passWord = subm[1];
            String username = subm[2];
            int points = Integer.parseInt(subm[3]);

            if (contestsAndPass.containsKey(contestName) && passWord.equals(contestsAndPass.get(contestName))) {
                if (!userContestPoints.containsKey(username)) {
                    userContestPoints.put(username, new TreeMap<>());
                    userContestPoints.get(username).put(contestName, points);
                } else {
                    if (!userContestPoints.get(username).containsKey(contestName)) {
                        userContestPoints.get(username).put(contestName, points);
                    } else {
                        int currPoints = userContestPoints.get(username).get(contestName);
                        if (currPoints < points) {
                            userContestPoints.get(username).put(contestName, points);
                        }
                    }
                }
            }
            submission = scanner.nextLine();
        }
        String bestStudent = "";
        int highestPoints = 0;
        int currPoints = 0;

        for (Map.Entry<String, Map<String, Integer>> entry : userContestPoints.entrySet()) {
            for (Map.Entry<String, Integer> entry2 : entry.getValue().entrySet()) {
                currPoints += entry2.getValue();
            }
            if (currPoints > highestPoints) {
                highestPoints = currPoints;
                currPoints = 0;
                bestStudent = entry.getKey();
            }
        }
        System.out.printf("Best candidate is %s with total %s points.%n", bestStudent, highestPoints);
        System.out.println("Ranking: ");
        List<Map.Entry<String, Map<String, Integer>>> listToSort = new ArrayList<>();
        for (Map.Entry<String, Map<String, Integer>> entry : userContestPoints.entrySet()) {
            listToSort.add(entry);
        }
        listToSort.sort(Comparator.comparing(Map.Entry::getKey));
        for (Map.Entry<String, Map<String, Integer>> entry : listToSort) {
            System.out.println(entry.getKey());
            List<Map.Entry<String, Integer>> toSort = new ArrayList<>();
            for (Map.Entry<String, Integer> a : entry.getValue().entrySet()) {
                toSort.add(a);
            }
            toSort.sort((a, b) -> b.getValue().compareTo(a.getValue()));
            for (Map.Entry<String, Integer> a : toSort) {
                System.out.printf("#  %s -> %d\n", a.getKey(), a.getValue());
            }
        }
    }
}