We have checked our code against an AC code of my friend on many randomly generated test files and checked the absolute error of 10^-6 and our code passes every file generated.
I was continuously getting WA on the solution which was first submitted 1 hour 53 minutes into the contest.Due to this we could not attempt further questions in-spite of having 1.5 hours remaining.
This seems a serious issue regarding ICPC selection procedure and appears to be a problem with many other contestants. So I would request Codechef to look into the matter seriously and get the results updated.
Also this kind of a problem totally ruins the ranklist. Most of the cases people will fail to qualify for a regional just for this error. Things need to be sorted out.
I checked my AC code against my own WA code and found no differences on all possible inputs (1-1e9,1-1e9) took a while to run but I still don’t know how and why it shows WA
i wasted 2 hours getting WA on this question. Now, trusting the problemsetters checker code, I thought my solution was wrong. We would have qualified easily if this bug wasn’t there
Should We have another regional qualification round, given these many factors: - Wrong Judgement of Compression Algorithm - Lag of Judgement on 2nd problem.
These are some serious issues which force team to change their strategy and let external factors control a programming contest.
Last year, a even serious fuck-up happened where teams claimed that they were logged out, couldnt access contest in last half and hour. Not sure how true it is, or how exaggerated, but thing is, such a serious thing happened- and no re-contest was held afaik.
Hm… The thing to notice here is that the absolute error here > 10^{-6}, but the relative error (obviously) is < 10^{-6}. So, can problem setter explain his intention behind why he chose his checker based on absolute error and not relative error? Clearly, all problems, which demands a certain degree of precision always chose to judge their solution on basis of relative error which is \frac{|A - B|}{max(1, A)}. My team was not affected, but we just got lucky I guess. To me, it seems ignorant on the problem setters part.
Our code (submission id: 16125742) gives the Expected output: 1819418087.764434 for the sample input mentioned above by the admin, still we got WA. Please rejudge the submissions. We got 3 penalties because of this issue.
