Even I agree with this. I’ve seen a lot of submissions which didn’t bother about this case. Had this case also been in their judge, most of the submissions would have got a WA verdict in their first attempts and given that this is a short contest (time-based ranklist), most of the participants would have had a (+/- 10) ranks atleast.
Now that the contest is over and the ratings also got updated, I think codechef can’t do anything regarding this.
PS: Well, I took care of the corner case also. So, I might have had a slightly better rank too. But no worries, all these are common in learning and experience.
Cook-off also had a weak test case in 1 problem. This time again weak test cases and codechef can’t do anything.