public static String getQuestion(int k) {
        try {
        return Server_Loader.questions_data.getString("Question#" + Server_Loader.round + "#" + k);
        }catch(Exception ex) {
            warn("Can't get " + k + " question's text (contest " + Server_Loader.contestName + ", round " +
                    Server_Loader.round + ")", false);
            ex.printStackTrace();
            warn("", true);
            return null;
        }
    }