OJ Board

I just had an email exchange with carlos, and this explained an oddity in the problem description. There is a missing comma in the phrase explaining "adjacent". It should read
" ... if one is immediately to the left, to the right, above, or below the other" .
Without the second comma in that ...

I notice that the test set was changed around September of 2008. The entry in the Fixing forum said they were rejudging all submissions. Check to see if your results are better now. Mine weren't.

Well, I changed all "-0" to "-1" and it still did not work.
I'm about to give up on 600.

I think the statement means that there will NOT be duplicates.

I'm starting to worry about a "-0" in the input. It would correspond to a fault when no pins were knocked over,
so it would make sense in terms of a real game. And
normal input conversion would not catch it. Nasty.

I'd like some more test cases too. Here is mine, it's just
one in addition to the one in the problem, but it was a
big help. If anyone uses this, I'd appreciate your posting
your own as well.

++ kevin


3
Tim Jim Bob
5 7 8 5 10 10 10 8 9 10 10 10 (scores for Tim's first game)
5 2 1 4 1 0
0 1 1 1 1 ...

Thanks for the reply. I had done all that, but the email address in my profile is unexpectedly down -- it's at the university where I teach, and support staff are on unofficial break, so it probably will stay down for a while. Actually, I'm not clear why it's labelled unofficial since it was ...

I'm working problem 500. I have what seems a good solution. But the judge says "compile error", and I cannot reproduce it, which makes it real hard to track down.

Anybody know what sort of machine/compiler/OS is used to do the compilations?

++ kevin

It appears that the judge's answers do not even follow the problem specification, and one has to tease out hints from the trailing (incorrect) whitespace of the HTML sample output.

To be clear: I'm not claiming that trailing whitespace is incorrect per se, but that it does not actually conform to ...

I'm user 22984. One way I look at my statistics I show 12
problems completed:
http://acm.uva.es/problemset/usersjudge.php?user=22984
This way is a link off of the results page from a submission.
This way seems to be working okay.

Another way, I show only the most recent:
http://acm.uva.es ...

Think of it this way: do you know what the judge uses as a test case? There are probably more test cases than are given in the samples. Then how are you going to put it into a variable if you don't know what it's going to be?

The moderators have replied to my bug. They showed a test case in which my program gave the wrong answer. They seem to agree that there need to be more test cases to prevent broken programs from being accepted, and will probably take care of that soon.

In the meantime, perhaps looking at the ...

I have run my solution against this test case, and get the
same answer you did, and verified that the judge's answer
is longer and is correct. Accordingly, the WA response to
my program was correct.

Moreover, I also ran the incorrect C++ program and found
it gave a correct, but different answer ...

You are not alone. :D This thread started with the same complaint by another. I had it too.

I verified that the above-posted solution indeed:
a: gives the wrong answer sometimes
b: is graded Accepted by the judge.

I have posted a bug in the bugs Forum, and perhaps the moderators will fix it, or ...

I know this is from the original problem set, but it appears
that there's a bug in the judge unfixed in all this time.
I suggest you take this judge offline until you have a chance
to fix it.

REASON: it is very discouraging to have a good program
rejected in one of the first problems you try ...