The question set contains 5 questions, out of which one shows wrong output for sample test cases (Tony and the triplets), another one have test cases out of constraints (BT engine) and one question have ambigious statement (Interview Day). I was unable to concentrate to read the last question (Pencryption Password).
Now, one noticeable thing is that there are many WA verdicts. (Of course, due wrong test cases). Still, mayur2305 and starkk99 managed to solved them without any wrong submission (also really fast) and got rank one and two respectively. Third rank holder was maoni, and this is his/her first contest using this ID. There are no previous submissions. ID was made for this contest.
Now the thing which bothers me is that organiser ameya13, and rank holders starkk99 and mayur2305 were teammates in many contests. Check here. Moreover starkk99 and organiser ameya13 are from the same college! (starkk99 edited his college information in codechef for this contest.)
I think this much evidence is enough prove that this round was full of cheating. All all this was done for 250 laddus! I request codechef admins and coordinators (vijju123, smit_mandavia) to cancel the laddus for this round.
Any edit suggestions are welcome.
Edit 1: Codechef link of the discussion: here.
Edit 2: Admins decison can be seen here.