DMOPC '19 March Contest


posted on April 2, 2020, 11:44 p.m.

Thanks for participating in the DMOPC '19 March contest!

Congratulations to the top 5 contestants!

  1. ecnerwal (perfect score)
  2. bqi343 (perfect score)
  3. 300iq
  4. zhouzixiang2004
  5. zxyl

We hope you enjoyed the contest, and we look forward to seeing you in DMOPC '19 April! (Typically, DMOJ doesn't host an April DMOPC as DMPG is hosted at that time instead. However, given the circumstances at the moment, it's not possible for DMPG to run, so we are planning on hosting another DMOPC.)


From Friday, March 27th to Sunday, March 29th, we'll be hosting the March DMOJ Monthly Open Programming Contest!

This round will be rated
on join
, a change from previous contests.

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

Contestants may participate in any 3-hour window between 09:00 EDT of Mar. 27th and 23:59:00 EDT of Mar. 29th. Please see the contest page for more details.

See you soon!


Comments


  • -6
    avis  commented on April 3, 2020, 12:22 a.m.

    This comment is hidden due to too much negative feedback. Click here to view it.


    • 6
      Plasmatic  commented on April 3, 2020, 1:57 a.m.

      And it took him 12 unrates to finally get rated, so I guess you should also be unrated for your next 12 contests as well.


  • -5
    avis  commented on April 3, 2020, 12:08 a.m.

    This comment is hidden due to too much negative feedback. Click here to view it.


    • 5
      CopyPastePolice  commented on April 3, 2020, 12:20 a.m. edited

      YOU'RE UNDER ARREST

      We have discovered that avis is an alternate account of eric574.

      We can see this by comparing solutions on eric574's Github page here, and avis's solutions on DMOJ here.

      Please note that the contest rules explicitly state that participating in a contest using an alternate account is prohibited. If you wish to change your main account, the correct way to do this is by requesting a username change by contacting the DMOJ staff.


      • -8
        avis  commented on April 3, 2020, 12:27 a.m.

        This comment is hidden due to too much negative feedback. Click here to view it.


        • 7
          CopyPastePolice  commented on April 3, 2020, 12:30 a.m. edited

          As mentioned above:

          If you wish to change your main account, the correct way to do this is by requesting a username change by contacting the DMOJ staff.


  • 5
    tehillah  commented on March 31, 2020, 4:06 a.m.

    When do the ratings get updated? (I'm new to this site)


    • 6
      Jonathan_Uy  commented on March 31, 2020, 5:20 a.m.

      The organisers have to check for suspicious submissions or cheating. It usually takes a couple days after the end of the contest, never more than a week.


      • 4
        tehillah  commented on March 31, 2020, 12:12 p.m.

        Thank you. I have one more question :- Is it against DMOJ's T&C to use code found online, which is publicly available and was present even before the contest started?


        • 2
          PeterC  commented on April 3, 2020, 5:52 a.m. edited

          Does this mean that for any contest/problem hosted on DMOJ, users will not be penalised for submitting code from external sources, as long as the sources have been properly credited? Just want to make sure, because I find it surprising that this is allowed.


          • 2
            tehillah  commented on April 3, 2020, 6:26 a.m. edited

            One of the major reasons it is allowed is because, contestants may find algorithms or concepts that they were not familiar with before the contest, this gives them the liberty to search for them and learn and implement them. This gives the competition some sort of fairness(paradoxically). For example, CodeChef, holds long challenges which spans for a week, whose main purpose is to help the contestants learn about the various tricks and algorithms typically used. But the caveat is that, the sources should be accessible to everyone and should have been on the internet before the start of the contest.(This is the rule followed by CF, AFAIK).

            P.S. :- I don't about DMOJ's T&C exactly. Someone who knows, can chime in and answer that part.


            • 5
              richardzhang  commented on April 3, 2020, 1:39 p.m.

              As tehillah said, many contestants find that using well known templates (KACTL, emaxx, etc.) or other major resources can help them a lot in the contest. We believe that it's not really part of the contest spirit to equate memorization with problem solving, i.e. contestants shouldn't be penalized for recognizing how to solve a problem without being able to rederive an algorithm some professor took years to derive.

              That being said, we draw a line between using well known, widely available template code and just submitting someone else's exact code for the problem. Copying someone else's code constitutes cheating for both the contestant submitting the copied code AND the contestant distributing the code.

              tl;dr: not exact code, widely available for all: okay. otherwise: be prepared to argue your case.

              P.S. the rules don't state that you must credit your source (at the moment at least), but it helps a lot if you do. It saves the contest organizers lots of time and helps you not get flagged as suspicious. :)


        • 6
          richardzhang  commented on March 31, 2020, 3:43 p.m.

          You've properly credited your source, so you're fine.


  • 24
    3fecta  commented on March 26, 2020, 2:15 p.m.

    Thanks Mike MikeMirzayanov Mirzayanov for the great Polygon and Codeforces systems


  • 1
    ChaKweTiau  commented on March 24, 2020, 1:48 a.m.

    looking fot it


  • 13
    Joyous  commented on March 22, 2020, 11:28 p.m. edited

    Exciting!