Before reading this please ignore cheating and cheaters.
I think the January contest was so good in terms of the problem difficulty level of questions and variety of questions
The contest has good problems with Dynamic programming, combinatorics, Interactive problem, and some good data structures. If we will think only about cheaters and cheating then it is not worthful for us.
The positive side of this contest should be, what we learned from this contest and where we should improve our skills in CP, because at last skills and honesty matter not cheating.