More and more people are cheating in contest and codechef is not doing a proper plague check or ai check to eliminate the cheaters …Nowadays even after solving 5 problems or 4 problems in reasonable time does not contribute much to your rating … i highly recommened that a more systematic and careful plague check must be done so that all the cheaters are eleiminated. I Think just like other platforms a higher problem must have a higher score not an equalized score