Open Contest 2006

I wonder if the sample output for problem "Rectangles in a Square" is correct?
As I understand it, the rectangles are put in a grid and corners are at integer coordinates in the grid. Therefore, a rectangle with opposite endpoints (3 8) (10 10) has width 7 and height 2. But there is no such rectangle given in the input, also no rectangle with width 2 height 7.
The sample output looks as if 1 was added to the true coordinates of (x1,y1).

The picture illustrate sample output. (3 8) (10 10) is for rectangle with width 8 and height 3. Coordinates arn't for cross-points of grid, but for small squares. May be I should point on it more carefully in problem description.

The scoring system seems a bit flawed. Say I code a solution in C and then submit it in C and C++. This won't improve my standing at all, but it will worsen the standing of everyone who has a lower score than I. To see what I mean, check out what Long has done in MSWP.

Could you limit scoring to one correct solution per person, not one correct solution per person per language?

Thanks.

Edit: Hmm, this may be a nonissue if score is based on your score versus the top score (and I think it is).. heh.

Update: ignore the below, I've just looked again and the scoring is correct. Not sure if I mis-looked before or whether something was fixed.

Problem #761 MSWP seems to be a "challenge" style problem according to the definition in the rules, but the scoring appears to be following the rules for "classical" problems: top scorers all have equal "your_score" for the problem, but the ranking table shows them getting different "table_score", in order of submission time.

Hugo

Problem "LIB" is poorly defined:

• "t – the number of lines [10 <= t <= 99]" but there's "06" in the example
• is "t" written at the beginning of the input, using two ASCII digits followed by "\n" ?
• are spaces allowed at beginning/end of line?
• are words separated with single spaces?
• does "several words" mean at least two words in each line?
• memory "consists of an array of 30,000 byte cells" but bf2c generates 32768 ints (in C, so of unknown size) - which one is correct?
• is it allowed to read more data from stdin than "t" lines?
• may I expect EOF (-1) ?
• may I output values outside 0..255 ?
• should I output the trailing "\n" ? (bf2c does that itself)
• does the program have to terminate after it writes the output?
• how is the "time limit" measured?

I could imagine that solutions that do that are rejected.

I meant the "\n" at the very end of output. If my program outputs it, bf2c outputs a second one.

I guessed that. The question is what machine is used for tests, what compiler and what compiler options.

• Pentium 3 Xeon 700MHz (exactly 1 processor for your disposal)
• bf2c (spoj.pl/bf2c.c) + gcc 3.3.3
• "-s -fomit-frame-pointer -O1" for gcc

Does it really make that much difference?

You shouldn't need to do that. For just about every problem (sans those with strict output requirements), whitespace is mostly irrelevant -- it's either absent or present. Your solution would be judged correct if it includes one or nine trailing "\n"s.

Yes, or it will exceed the time limit (the judge software doesn't know you're actually done).

Why the solutions sent after first accepted are not considered for the ranking in RIS problem?