csacademy's blog

By csacademy, 3 months ago, In English,

Hello, Codeforces!

We're going to host a new contest at csacademy.com. Round #49 will take place on Wednesday, 20/September/2017 15:00 (UTC). This contest will be a Div1 + Div2, with 7 tasks of varying difficulty that need to be solved in 2 hours.

We are glad to have zscoder as a problem author.

Contest format:

  • You will have to solve 7 tasks in 2 hours.
  • There will be full feedback throughout the entire contest.
  • Tasks will not have partial scoring, so you need to pass all test cases for a solution to count (ACM-ICPC-style).
  • Tasks will have dynamic scores. According to the number of users that solve a problem the score will vary between 100 and 1000.
  • Besides the score, each user will also get a penalty that is going to be used as a tie breaker.

Prizes

We're going to award the following prizes:

  1. First place: 100$
  2. Second place: 50$

About the penalty system:

  • Computed using the following formula: the minute of the last accepted solution + the penalty for each solved task. The penalty for a solved task is equal to log2 (no_of_submissions) * 5.
  • Solutions that don't compile or don't pass the example test cases are ignored.
  • Once you solve a task you can still resubmit. All the following solutions will be ignored for both the score and the penalty.

If you find any bugs please email us at contact@csacademy.com

Don't forget to like us on Facebook, VK and follow us on Twitter.

 
 
 
 
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3 months ago, # |
  Vote: I like it +11 Vote: I do not like it

When can I receive my prizes from #43 :p

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    3 months ago, # ^ |
      Vote: I like it +14 Vote: I do not like it

    Sorry, we had that somehow marked as solved, and you didn't write to us after the round. :) I've sent you an email, and will send you the prize when you answer with your preferred payment method.

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3 months ago, # |
  Vote: I like it +31 Vote: I do not like it

Reminder : Contest starts in 3 hours.

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3 months ago, # |
  Vote: I like it +29 Vote: I do not like it

Hi. I just finished the editorial for problem Amusement park (link) (editorial link) I really enjoy Expected value problems, so I wanted the editorial to be as good as possible to understand. If you have any feedback, it's greatly appreciated since this is one of my first editorials.

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    3 months ago, # ^ |
    Rev. 2   Vote: I like it +13 Vote: I do not like it

    Also, if your solved the problem but your solution requires infinite sums or crazy math, I really suggest to take a look at the editorial for a easier approach :)