An Animal Contest 2

Welcome to An Animal Contest! This contest will be themed around koalas!

The Problem Setters are Tony1234, sjay05, samliu12, danielz1000, WilliamWu277, ThingExplainer, and Plasmatic.

Special thanks to Encodeous, feliser, Dan13llljws, johnroo2, Brian_Li23, Tmaswang03, sleazywhale1, and explosion for testing, feedback, and assistance with the problems!

Special shout-out to Riolku for helping us organize the contest!

The contest will run from May 7th, 00:00 EDT to May 10th 00:00 EDT. You will have a three hour window to solve 6 main problems of roughly increasing difficulty ranging from CCC Junior to CCC Senior. The contest will also feature a 7-th problem (Problem 0) for students who are just getting started with programming.

Here are the parameters of the contest:

  • Contest duration: 3 hours.
  • Number of problems: 7, full feedback (you will see the results of your submissions instantly). Problem 0 will be worth 30 points, and the rest will be worth 100 points. Some problems will offer partial marks in the form of subtasks.
  • Scoreboard will be hidden, until your window is over. Divulging the contents of the scoreboard to participants who have not finished their window is an offense, the punishments of which are listed below.
  • No incorrect submission penalty.
  • There will be no submission limit.
  • Ties in score will be broken by the sum of the last submission times that increased your score.
  • Checkers for problems: Unless otherwise specified, standard.
  • Rated for all users who open the contest and have rating less than 2200.
  • All problems are guaranteed to be solvable in PyPy 3, Java and C++.

Before the contest date, you may wish to check out the tips and help pages.

We have listed below some advice as well as contest strategies:

  • Remove all extra debugging code and/or input prompts from your code before submitting. The judge is very strict — most of the time, it requires your output to match exactly.
  • Do not pause program execution at the end. The judging process is automated. You should use stdin / stdout to perform input / output, respectively.
  • Python users are recommended to use PyPy 2/3 over Python 2/3 when submitting.

At the end of the contest, you may comment below to appeal a judging verdict. In the case of appeals, the decision(s) of DMOJ staff is final.


Clarification requests for the contest must be routed through the clarification system provided on DMOJ, and not through other channels including but not limited to Discord and Slack. Furthermore, all clarification requests will be handled the way they normally are in IOI. Note that, in particular, clarification requests must come in the form of yes/no questions.

Due to rampant issues with cheating on contests that has happened recently, any suspicious behavior during the contest window may result in your rating being impacted negatively. Such behavior includes, but is not limited to:

  • Divulging the contents of the scoreboard to participants who have not finished their window.
  • Registering for the contest with at least two accounts.
  • Participating in the contest with an account that is not your primary account.
  • During the contest window, talking about the contest in more detail than answering a yes/no question about whether one participated in the contest. This includes, but is not limited to, posting spoilers about the contest and public speculation of the contest.
  • Attempting to exploit bugs in the platform to subvert the constraints of the contest.

Punishments may include performance being unrated or, for more serious infractions, being forcibly ranked at the bottom of the scoreboard.

At the end of the contest, you may comment below to appeal a judging verdict. In the case of appeals, the decision(s) of DMOJ staff is final.


Comments


  • 11
    billsboard  commented on May 4, 2021, 5:44 p.m.

    Friendship ended with Alpaca?


    • 10
      Dan13llljws  commented on May 5, 2021, 8:01 p.m.

      We are all followers of bruce


    • 13
      WilliamWu277  commented on May 4, 2021, 7:08 p.m.

      Alpacas are in the past! We must embrace the future and admit that Koalas are the hot stuff! Forget alpacas. Koalas are the new trend!


      • 15
        lamsiu21  commented on May 5, 2021, 3:27 p.m.

        winking polar bear themed contest when?


        • 17
          samliu12  commented on May 5, 2021, 3:46 p.m.

          Why does that profile picture look familiar :)


  • 8
    GreyAerin  commented on May 4, 2021, 1:49 p.m.

    It is now time for Koala


  • 10
    YidiChen  commented on May 4, 2021, 7:46 a.m.

    orz


  • 6
    wozhenshuai  commented on May 4, 2021, 1:52 a.m.

    orz another contest!


  • 13
    vishnus  commented on May 3, 2021, 6:49 p.m.

    :cutecus:


    • 10
      Badmode  commented on May 4, 2021, 12:17 a.m.

      Hugging a koala is added to my todo list :3


      • 13
        piddddgy  commented on May 5, 2021, 8:27 p.m.

        hi it's me a koala :o


        • 7
          Badmode  commented on May 6, 2021, 1:28 a.m.

          I'll hug you even though raccoons aren't koalas :333


        • 7
          vishnus  commented on May 5, 2021, 9:55 p.m.

          hugs


  • 22
    Tony1234  commented on May 3, 2021, 4:02 p.m. edited

    :D