Alebn's blog

JBOI situation
By Alebn, history, 14 months ago, In English

Hello codeforces! Some of you have probably heard of JBOI (Junior Balkan Olympiad in Informatics). It has been organized every year since 2007, giving an opportunity to many young students to go on their very first OI, give them experience and prepare them for future challenges in high school.

This year however, JBOI is probably going to be without a host. No country has applied to organize it so it will probably be online or in the worst case it won't be organized at all.

If you are in the position to do something to change this, are willing to help organise JBOI in your country, or know someone who can; please make the day of junior cp-ers by giving them the opportunity of their first olympiad/visit to another country

I made this blog post to find the people who can do this but I also encourage discussion about JBOI in the comments

Thank you very much and to the rest of potential JBOI participants, I hope to see you there :>

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14 months ago, # |
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Does anybody know a website where we can upsolve JBOI 2022 problems?

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    14 months ago, # ^ |
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    You can submit here, but the statements are in Romanian. For English statements you can check https://jboi2022.lrmd.ro/competition/tasks.

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      10 months ago, # ^ |
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      I tried to submit it in and it gave me Compilation Error while it was working on my compiler

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        10 months ago, # ^ |
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        I am assuming this is your submission. Read the error. As far as I know, variable length arrays are not in the C++ standard, but some compilers may support them as an extension. Initialize the arrays with constant lengths and it should work.

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          10 months ago, # ^ |
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          thx, can ask you in the future when i have some problems with JBOI?

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14 months ago, # |
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tbh I think that EJOI is enough

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13 months ago, # |
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Is there any update regarding JBOI 2023?

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    13 months ago, # ^ |
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    Sadly no, 99% it will be online

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12 months ago, # |
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Any news?

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12 months ago, # |
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I am getting worried about the future of the OI organizations. Even EJOI 2023 was announced late this year.

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11 months ago, # |
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https://jboi2023.cs.org.mk/

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    11 months ago, # ^ |
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    Is it onsite?

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      11 months ago, # ^ |
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      Can someone answer?

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      11 months ago, # ^ |
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      It will be online. Organizers of national competitions in your country should have already gotten an email about other details, so I would suggest getting in touch with them.

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      10 months ago, # ^ |
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      I wish it were onsite I would love to see people

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11 months ago, # |
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what is the age limit?

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11 months ago, # |
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https://www.google.com/amp/s/mandoulides.edu.gr/en/2023/06/20/15-symmetoches-se-diethneis-olympiades-kai-valkaniades-to-2023/

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10 months ago, # |
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JBOI 2023 Update blog

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10 months ago, # |
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Day 1 problems:

  1. Penalitate babana
  2. CHT penale
  3. Subtaskuri penale
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    10 months ago, # ^ |
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    Didn't 3. only have 3 subtasks, out of which 2 were only 1 subtask

    Also did 2. really need CHT to be solved?

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      10 months ago, # ^ |
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      Yeah, problem 2 required CHT for full solution, and had 1 full solve.

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        10 months ago, # ^ |
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        Beuh my mentor told me its ez (CHT is hard...) Anyways how didnt nobody solve 3? I got the idea in the last 10 mins and it isnt that hard. You represent the number as a bitmask and calculate the sum by calculating for each possible count(i) using the 1's in the binary representation

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          10 months ago, # ^ |
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          Why are you talking to your mentor about problems during competition anyways?

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            10 months ago, # ^ |
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            What? I talked to him after the competition. You didnt understand me

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              10 months ago, # ^ |
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              Relax, I was just kidding, no worries!

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    10 months ago, # ^ |
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    Day 1:

    Problem 1: Cautare binara babana

    Problem 2: Am rezolvat-o la ora cu Ana Boiangiu acm 3 luni, deci tot babana

    Problem 3: Didnt read but output random shuffle 83 points baban

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10 months ago, # |
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1.3 (My solution)
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10 months ago, # |
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simona1230 orz

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