3. Followers

import java.util.HashMap;
import java.util.Scanner;

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

        HashMap<String, Integer> records = new HashMap<>();

        String input = scan.nextLine();
        while (!"Log out".equals(input)) {
            String[] tokens = input.split("\\: ");
            String command = tokens[0];
            String username = tokens[1];

            switch (command) {
                case "New follower":
                    if (!records.containsKey(username)) {
                        records.put(username, 0);
                    }
                    break;
                case "Like": {
                    int newCount = Integer.parseInt(tokens[2]);
                    records.putIfAbsent(username, 0);
                    records.put(username, records.get(username) + newCount);
                }
                    break;
                case "Comment":
                    records.putIfAbsent(username, 0);
                    records.put(username, records.get(username) + 1);

                    break;
                case "Blocked":
                    if (records.containsKey(username)) {
                        records.remove(username);

                    } else {
                        System.out.println(String.format("%s doesn't exist.", username));
                    }
                    break;
            }
            input = scan.nextLine();
        }
        System.out.println(records.size() + " followers");
        records
                .entrySet()
                .stream()
                .sorted((v1, v2) -> {
                    int result = v2.getValue() - v1.getValue();
                    if (result == 0) {
                        result = v1.getKey().compareTo(v2.getKey());
                    }
                    return result;
                })
                .forEach(e -> System.out.println(e.getKey() + ": " + e.getValue()));

    }
}