// Magazine ids not unique across categories
        //dict of category along with list of magazine ids is formed
        static void Main(string[] args)
        {
            var subscribers             = MagazineAPICalls.GetSubscribers();
            var categoriesMagazines     = MagazineAPICalls.GetCategoriesAndMagazines();
            ListOfSubscribers resultset = new ListOfSubscribers();

            //looping through subscribers
            foreach (var subscriber in subscribers.data)
            {
                var insertFlag = true;
                foreach (var dictObj in categoriesMagazines)
                {
                    if (dictObj.Value.Intersect(subscriber.magazineIds).Count() == 0)
                    {
                        insertFlag = false;
                        break;
                    }
                    else
                    {
                        // Magazine ids are not unique across categories
                        subscriber.magazineIds.RemoveAll(x => dictObj.Value.Contains(x));
                    }
                }
                if (insertFlag)
                {
                    resultset.subscribers.Add(subscriber.id);
                }
            }

            Console.WriteLine(MagazineAPICalls.IsAnswerCorrect(resultset));
        }
        public static bool IsAnswerCorrect(ListOfSubscribers lstSubscriberIds)
        {
            HttpClient client = new HttpClient();

            var content = new StringContent(JsonConvert.SerializeObject(lstSubscriberIds), Encoding.UTF8, "application/json");
            HttpResponseMessage response = client.PostAsync(baseUrl + "/api/answer/" + GetToken(), content).Result;

            if (response.IsSuccessStatusCode)
            {
                var result = JsonConvert.DeserializeObject <GetAnswerResponse>(response.Content.ReadAsStringAsync().Result);
                return(Convert.ToBoolean(result.success));
            }

            return(false);
        }