help with adding duplicates elements together in a list

[ibreeden]

It is a pity you are not allowed to use a dictionary. This makes it difficult to create a nice script.
As stated by Yoriz, this forum requires you to produce a program yourself and then you will get help to make it work. But I can give you some hints about the data structure and algorithm you may use.
Because a dictionary is not allowed, my advice is to create an intermediate data structure, fit for further processing. It should be a list of lists where each sublist starts with the student id, followed by the scores. Like this:

intermediate = [
                [6610013121, 4],
                [6610021021, 5],
                [6610000121, 3, 2, 2, 3]
               ]

The algorithm is then:

1. Read the given list "d" in pairs of student_id and score.
   
2. Scan the intermediate list to see if student_id already exist as intermediate[i][0]
   
3. If it is: append the score to the sublist; else append a new sublist to the intermediate list containing [student_id, score].
   
4. When this is all done you can start handling the intermediate list. First create an empty list for the results.
   
5. If there are more than 4 scores in a sublist, find and remove the lowest.
   
6. Summarize the scores of the sublist and append them to the results list in pairs of student_id and summarized score.
   

Please try to make a program of this and show it to us. If you get errors, show the complete error message.