Здравейте, 08. Mentor Group от Objects and Classes - Exercise , дава 90/100 и си блъскам главата :)

Кодът ми: https://pastebin.com/yyVMQ8c9

1.   Mentor Group

You are mentor of a group. You have done your job well and now you have to generate a report about your group's activity. You will be given usernames and dates ("dd/MM/yyyy"), dates (if any) are separated with comma, until you receive command "end of dates". After that you will receive user and some comment (separated with dash). You can add comment for every user who is in your group (if not ignore the line). Adding comment/date to same user more than once should append to that user the comment/date. Upon receiving command "end of comments" you should generate report in format:

Users should be printed ordered by name (ascending). For every user, their dates should be sorted again in ascending order. Input will be valid and in the format described - you should not check it explicitly!