bertrandovide's blog

USACO: Second Contest (January Contest)
By bertrandovide, history, 5 years ago, In English

Hello !

January Contest The USACO 2019 January contest is available from January 18 through January 21 at 23:59 UTC-12 time. It is 4 hours in length, and can be taken any time during the larger contest window. For further details, and instructions on how to start the contest: http://usaco.org/index.php?page=viewcontest

Happy code!

  • Vote: I like it
  • +43
  • Vote: I do not like it

Comments Comments (21)
| Write comment?
»
5 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Auto comment: topic has been updated by bertrandovide (previous revision, new revision, compare).

→ Reply
»
5 years ago, # |
  Vote: I like it -10 Vote: I do not like it

What is wrong with sample test case in problem Platinum Problem 2. Exercise Route??

I think bad data...

Your output file exercise.out: [File missing!]

The correct answer: 13223522111

→ Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    The answer for sample is 4 according to the sample:

    SAMPLE OUTPUT:

    4

    → Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    I printed n and m and it said that they are equal to 1000 and 200000.

    → Reply
    • »
      »
      »
      5 years ago, # ^ |
        Vote: I like it -41 Vote: I do not like it

      Please do not discuss the problem as the contest is still running. Thank you.

      → Reply
      • »
        »
        »
        »
        5 years ago, # ^ |
        ← Rev. 2   Vote: I like it -10 Vote: I do not like it

        I do not actually discuss the problem.

        I mentioned something from the statement or gave ideas?

        → Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it +30 Vote: I do not like it

    Thanks for pointing this out; the issue was that the sample case was not the first test case. This is being fixed and past submissions are being regraded.

    → Reply
»
5 years ago, # |
  Vote: I like it -50 Vote: I do not like it

Is anyone taking silver?

→ Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it +70 Vote: I do not like it

    Please do not discuss the problem as the contest is still running. Thank you.

    → Reply
»
5 years ago, # |
  Vote: I like it +33 Vote: I do not like it

All problems are FFT in every division. Change my mind.

→ Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Actually the time limit for Java allows slow fourier transform too.

    → Reply
»
5 years ago, # |
← Rev. 4   Vote: I like it +6 Vote: I do not like it

I think there's something wrong with the test data of Gold P2, can someone who got AC on that reply to this comment.

UPD: The test data was indeed wrong and the submissions were rejudged.

→ Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 2   Vote: I like it -11 Vote: I do not like it

    I wouldn't consider this cheating but you're walking a fine line so I'd be careful. Anyways, I hope you get your problem solved!

    EDIT: Glad the test cases were fixed.

    → Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 4   Vote: I like it 0 Vote: I do not like it

    Wait there was something wrong with the Gold Problem 2 test data? I thought it was only platinum problem 2? Also, who announced that the test data was wrong and when was it rejudged?

    Edit: Noobita answered my question already: it was early on in the competition and the grading machine had trouble with whitespace. Thanks again Noobita.

    → Reply
»
5 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Wouldn't the fact that the contest is open the entire weekend allow for cheating if you create a fake account and read the problems and then once you solve them confidently log into your main and start the test? How does USACO deal with this?

→ Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 2   Vote: I like it +14 Vote: I do not like it

    Perhaps the US competitors must do the test in a certain hour or under the supervision of someone. Coordinators trusting in their competitors is a risky bet (perhaps unfair for honest participants)

    → Reply
    • »
      »
      »
      5 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      US competitors take the exam the same way everybody else does. There aren't any special procedures.

      → Reply
      • »
        »
        »
        »
        5 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        My perfect world idea is that competitors which can solve the problems obtaining the required score in a weekend, are sufficiently proud of themselves for cheating.

        → Reply