Here’s the official statement for ACM ICPC Kharagpur Regional Preliminary Online Round Re-contest:
Due to many complaints received regarding one of the problems for the Online Invitational Programming Contest held on 18th October, upon investigation we realised that the problem was a classical problem whose solutions were easily available online. It is extremely unfortunate that this happened and has wasted the efforts of the contest organisers as well as the students. After considering all options, to be able to be fair to most and to keep the integrity of the selection process intact, it has been decided by the site director to conduct another contest for ACM ICPC Kharagpur Online Invitational Programming Contest on 30th October, Thursday (18:00 - 21:00 hrs).
The teams for on-site contest will be shortlisted only on the basis of their performance in the second contest.