Ccc2013

[linuxp]

Raknarg @ Sat Mar 02, 2013 11:34 pm wrote:

Im pretty sure the questions had a 1 minute limit

The online grader changed time limit to 1 second for s1-4 and 6s for s5.

[nullptr]

My solution for S5 takes about 45 seconds on my own computer (which is about 2 GHz). Will it get full marks?

[Halls McSmurfin]

nullptr @ Sun Mar 03, 2013 5:47 pm wrote:

My solution for S5 takes about 45 seconds on my own computer (which is about 2 GHz). Will it get full marks?

No

[ishiney]

nullptr @ Sun Mar 03, 2013 5:47 pm wrote:

My solution for S5 takes about 45 seconds on my own computer (which is about 2 GHz). Will it get full marks?

Why not enter it in yourself? http://cemclinux1.math.uwaterloo.ca/index.php
The Post-contest page is for trying out your code again, I think.

[nullptr]

ishiney @ Sun Mar 03, 2013 6:41 pm wrote:

nullptr @ Sun Mar 03, 2013 5:47 pm wrote:

My solution for S5 takes about 45 seconds on my own computer (which is about 2 GHz). Will it get full marks?

Why not enter it in yourself? http://cemclinux1.math.uwaterloo.ca/index.php
The Post-contest page is for trying out your code again, I think.

Our school didn't get a grader for some reason, so I don't have any login info.

[t68]

When will CEMC release the stage 2 cut-off? Looks like a lot people solved S5. Could it be 65 for stage 2?

[Unnamed]

How is CEMC going to get over this Computer Judge vs. Human Judge issue?

I know they answered with the whole, 6 s = 1 minute thing, but how about this?

The "slow" S5 solution on http://mmhs.ca/ccc/index.htm gets a 12/15 from a human judge, but a 9/15 from the computer judge.

This doesn't affect me, but someone with a 65 with a 9 for S5 may be prevented from moving on to stage 2 if the cut-off was 66 - 68.

[t68]

On the other side, using online judge has the advantage to prevent careless mistakes. I guess it is hard to say which one was a better option for this year's CCC.

[coolgod]

From what I heard they will take most of the high scores and remark it once more on their judge. Ultimately the cutoff scores and final ccc scores should be based on the judge because this would be the fairest.

[t68]

or they could give one cut-off for students without on-line judge since they don't have chance to correct their codes and re-submit, and give a different cut-off for people using on-line judge as they had shorter time limit

they even have the option to remove some test cases in S5 to balance out the differences, I guess.

[coolgod]

what about people who used the

t68 wrote:

or they could give one cut-off for students without on-line judge since they don't have chance to correct their codes and re-submit, and give a different cut-off for people using on-line judge as they had shorter time limit

they even have the option to remove some test cases in S5 to balance out the differences, I guess. roll

what about people given the online judge without feedback? What about people who's code worked on judge but after remark it dropped? What about people who submitted both?

[A.J]

Student's with a mark of (typically) > 40 have their submissions remarked by the committee, and then the top 20 submissions are decided based on the scores (there might be 21 - 23 participants invited to move on to Stage 2 if there is a tie for 20th). I suspect that the cutoff will be higher than usual this year (~60 - 65).

[t68]

coolgod wrote:

From what I heard they will take most of the high scores and remark it once more on their judge. Ultimately the cutoff scores and final ccc scores should be based on the judge because this would be the fairest.

People (without online judge) did not even know this 6s limit. One would use a completely different algorithm for 6s vs. 1min. It is not reasonable to change the time limit rule for them at all (post contest). It is clearly about CEMC's reputation and ethics.

For people with online judge, I am not sure that they knew this 6s time limit up front. If yes, two groups of students were writing this contest with different instructions.

For a national contest like this, this is not a desired outcome. Maybe they could invite more than 20 students this year to make it fair.

[Halls McSmurfin]

Where does the 6s runtime limit come from? S5 has a 5s runtime limit.

[t68]

Halls McSmurfin @ Mon Mar 04, 2013 4:48 pm wrote:

Where does the 6s runtime limit come from? S5 has a 5s runtime limit.

well, close enough compared with 1min.