Ranking

package.BasicExercise.MapsLambdaStream;

import java.util.*;
import java.util.function.Function;
import java.util.stream.Collectors;

public class Ranking {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        Map<String, String> contestsPasswords = new HashMap<>();
        Map<String, Map<String, Integer>> usersContestsPoints = new TreeMap<>();

        String line = scan.nextLine();
        while (!line.equals("end of contests")) {
            String[] tokens = line.split(":");
            String contestName = tokens[0];
            String contestPassword = tokens[1];
            contestsPasswords.put(contestName, contestPassword);
            line = scan.nextLine();
        }

        line = scan.nextLine();
        while (!line.equals("end of submissions")) {
            String[] tokens = line.split("=>");
            String contestName = tokens[0];
            String contestPassword = tokens[1];
            String userName = tokens[2];
            int points = Integer.parseInt(tokens[3]);

            if (contestsPasswords.containsKey(contestName) &&
                    contestsPasswords.get(contestName).equals(contestPassword)) {
                if (usersContestsPoints.get(userName) == null) {
                    Map<String, Integer> tempUsersPoints = new HashMap<>();
                    tempUsersPoints.put(contestName, points);
                    usersContestsPoints.put(userName, tempUsersPoints);
                } else {
                    if (!usersContestsPoints.get(userName).containsKey(contestName)) {
                        usersContestsPoints.get(userName).put(contestName, points);
                    } else if (usersContestsPoints.get(userName).get(contestName) < points) {
                        usersContestsPoints.get(userName).put(contestName, points);
                    }

                }


            }


            line = scan.nextLine();
        }

        Map<String, Integer> bestUserMaxPoints = new HashMap<>();
        for (Map.Entry<String, Map<String, Integer>> entry : usersContestsPoints.entrySet()) {
            for (Map.Entry<String, Integer> userPoints : entry.getValue().entrySet()) {
                String name = entry.getKey();
                int points = userPoints.getValue();

                if (!bestUserMaxPoints.containsKey(name)) {
                    bestUserMaxPoints.put(name, points);
                } else {
                    bestUserMaxPoints.put(name, points + bestUserMaxPoints.get(name));
                }
            }
        }

        String name = bestUserMaxPoints.entrySet().
                stream().sorted((a, b) -> b.getValue().compareTo(a.getValue()))
                .findFirst().get().getKey();
        int points = bestUserMaxPoints.entrySet().stream().sorted((a, b) -> b.getValue().compareTo(a.getValue())).
                findFirst().get().getValue();


        System.out.println(String.format(("Best candidate is %s with total %d points."), name, points));
        System.out.println("Ranking: ");
        usersContestsPoints.entrySet().stream().forEach(e->{
            System.out.println(e.getKey());
            e.getValue().entrySet().stream().sorted((a, b) -> b.getValue().compareTo(a.getValue())).forEach(b -> System.out.println(String.format(("#  %s -> %d"), b.getKey(), b.getValue())));
        });
    }
}