I disagree with the reasoning.  First, we are talking about giving the test 
data only in PRACTICE mode, not in the contest.

Now, you discouraged participation by making it hard for people practicing 
solutions to know where they failed and to improve their solution.  I want to 
improve my solution but after spending a few hours at some point I have to move 
on.  Instead of aiding me to figure out where I made a mistake, you deny me the 
opportunity to learn from that mistake during the practice round.

"Testing is an important part of programming" but when you cannot solve the 
problem, that's when you go to aids such as the analysis or the test data.  I 
already coded the solution correctly in other (DP) way, ran millions of random 
tests (correct and WA are identical) and checked carefully through my original 
code.  I spent way too long trying to figure out why my submission got WA and I 
shouldn't have to waste 6 hours because of some imaginary dream of why this is 
a good coding practice that simulates the real world.

At least if you said the reason is legal liability or something like that I 
would have understood.  Not giving the test cases after the round is 
frustrating for anyone who cares about it.  Just change the policy and make the 
text files available please.

On Friday, April 27, 2018 at 10:11:57 AM UTC-7, Pablo Heiber wrote:
> Hi Alex,
> 
> 
> We've been asked this several times, and our policy is not to reveal test 
> data. If you are interested about the reasoning, you can refer to old threads 
> in this group that discuss the topic, like this one.
> 
> 
> Best,
> Pablo
> 
> 
> On Fri, Apr 27, 2018 at 9:47 AM Alex Wice <[email protected]> wrote:
> Please make input/output test case data available after contests end, when 
> appropriate (non-interactive problems.)  It is a simple text file.
> 
> 
> 
> I can't debug some problems and it would be really nice to know what cases I 
> failed.
> 
> 
> 
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