design and implement a data structure and performs the
following operation with the help of file (included 1000
student marks in 5 sub. and %also)

1.how many students are fail in all 5 subjects (if >35)
2. delete all student data those are fail in all 5 subjects.
3. update the grace marks (5 no. if exam paper is 100 marks)
4. arrange the student data in ascending order basis of marks.
5.insert double of deleted students with marks in the list.


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