import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Timus2002 {

    public static void main(String[] args) {

        Map<String, String> map = new HashMap<>();
        Scanner sc = new Scanner(System.in);
        String[] s = new String[105];
        ArrayList<String> logged = new ArrayList<>();
        int n = Integer.parseInt(sc.nextLine());
        for (int i = 0; i < n; i++) {
            s[i] = sc.nextLine();
        }

        for (int i = 0; i < n; i++) {
            String[] mas = s[i].split(" ");
            if(mas[0].equals("register")){
                if(map.containsKey(mas[1])){
                    System.out.println("fail: user already exists");
                    continue;
                }
                map.put(mas[1], mas[2]);
                System.out.println("success: new user added");
            }

            String login = mas[1];
            if(mas[0].equals("login")){
                String pass = mas[2];
                if(!map.containsKey(login)) {
                    System.out.println("fail: no such user");
                    continue;
                }
                String value = map.get(login);
                if(!value.equals(pass))
                    System.out.println("fail: incorrect password");

                if(value.equals(pass)) {
                    if (!logged.contains(login)) {
                        logged.add(login);
                        System.out.println("success: user logged in");
                    }
                    else
                        System.out.println("fail: already logged in");

                }
            }

            if(mas[0].equals("logout")) {
                if (!map.containsKey(login))
                    System.out.println("fail: no such user");
                if (!logged.contains(login))
                    System.out.println("fail: already logged out");
                else {
                    System.out.println("success: user logged out");
                    logged.remove(login);
                }
            }
        }
    }
}

It works, but cant pass the test