Can someone please tell me why the judge makes these changes without any notice or some explanation. If you decide to reevaluate some problem please explain why (wrong test-cases - modification of requirements or somthing).
In the last period of time there are a lot of problems that are just rejudged without any notice and explanation. It is kind of frustrating to have been accepted for some problem and then just to find out that is incorrect.
If there is possible please tell what changed in order to reevaluate some problems.
It's just a suggestion. People are leaving codechef for more reactive contest sites (admins more involved that can admit that there are wrong and explain what happened).
Best regards.