diff --git a/main.py b/main.py
index 9ff0195..6f2205f 100644
--- a/main.py
+++ b/main.py
@@ -6,14 +6,7 @@ import exceptions
 import os
 
 subjects = []
-filepath = "/data/user.grades"
 try:
-    password = user_IO.password()
-    if os.path.isfile(filepath):
-        with open(filepath, 'r') as file:
-            string = encryption.decrypt(password, file.read())
-            serializer.deserialize(string)
-
     while True:
         try:
             user_input = user_IO.user_input()
@@ -43,7 +36,9 @@ try:
             elif input_or_output == "output":
                 _subject = user_input[1]
                 subject_get = subject.get_subject(subjects, _subject)
-                user_IO.user_output(subject_get.return_average_subject)
+                user_IO.user_output(subject_get.name, subject_get.return_grade_categories(),
+                                [subject_get.return_average_of_category(i) for i in subject_get.return_grade_categories()],
+                                subject_get.return_average_of_subject())
             elif input_or_output == "exit":
                 break
             else:
@@ -53,10 +48,8 @@ try:
                 exceptions.SubjectNotExistingException, exceptions.WrongCaseException) as e:
             user_IO.exception_raised(e)
 
-    with open(filepath, 'w') as file:
-        _list = [serializer.serialize(_subject) for _subject in subjects]
-        string = encryption.encrypt(password, str(_list))
-        file.write(string)
+    
 
 except Exception as e:
     print('ERROR' + str(e))
+    raise
diff --git a/subject.py b/subject.py
index 98eafea..7d6f9c7 100644
--- a/subject.py
+++ b/subject.py
@@ -19,17 +19,18 @@ class Subject:
         return self.grades[category][0]
 
     def return_grade_categories(self):  # Return all categories
-        return [i for i in self.grades]
+        return self.grades
 
     def return_average_of_category(self, category):  # Return average of one categorie
-        return sum(self.grades[category][0]) / len(self.grades[category][0])
+        _list = [int(i.grade) for i in self.grades[category][0]]
+        return sum(_list) / len(self.grades[category][0])
 
     def return_average_of_subject(self):
         rating_sum = 0
         grade_sum = 0
         for i in self.grades:
             rating_sum += self.grades[i][1]
-            grade_sum += self.return_average_of_category(i)
+            grade_sum += self.return_average_of_category(i)*self.grades[i][1]
         return grade_sum / rating_sum
 
     def category_existing(self, category):
diff --git a/user_IO.py b/user_IO.py
index 5650a1b..a5d4902 100644
--- a/user_IO.py
+++ b/user_IO.py
@@ -49,17 +49,12 @@ def user_output(subject, categories, average, average_subject):
     for counter, category in enumerate(categories):
         print("The average in {} is {} with these grades:".format(category, average[counter]))
         string = ""
-        for grade in categories[category]:
-            string += str(grade) + ", "
+        for grade in categories[category][0]:
+            string += str(grade.grade) + ", "
         print(string + "\n")
         print("The average of {} is {}.".format(subject, average_subject))
 
 
-def password():
-    print("What is your password?")
-    return input()
-
-
 def exception_raised(exception):
     print("Dear user you've raised an exception. The cause of the exception is:")
     if exception is exceptions.SubjectNotExistingException: