stdfloat's blog

OI groups on CF
By stdfloat, 10 months ago, In English

In my country many sites are blocked.

Such as

Luckily Codeforces isn't blocked in my country, and I'm looking for OI groups on CF.

Such as

If you know such groups please comment it. It will be very helpful.

Unfortunately I can't use vpn
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10 months ago, # |
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it will be good for me too

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    10 months ago, # ^ |
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    Me too!!!

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      8 months ago, # ^ |
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      try Kilonova (good,new Romanian OI-style problems website, has english translations for all problems, has a lot of contests and if I am not mistaken has really fast servers)

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        8 months ago, # ^ |
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        Blocked. :(

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          8 months ago, # ^ |
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          pbinfo.ro, nerdarena.ro, infoarena.ro, sepi.ro (only statements), sepi2021.ro (only statements)

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10 months ago, # |
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https://www.acmicpc.net/

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10 months ago, # |
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is this one also blocked: https://olimpiada.ic.unicamp.br/ ? obs: it is in pt-br

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    10 months ago, # ^ |
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    No it's not blocked :). Which OIs does it have?

    Am I right?
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      10 months ago, # ^ |
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      Yep, it's the Brazillian Olympiad in Informatics (OBI in Portuguese) website. All problems there are OBI problems. For those who cannot access the official website or don't know Portuguese, there's this. Just search "OBI" on the search bar and most recent problems should show up.

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10 months ago, # |
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use V*N

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10 months ago, # |
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If you haven’t tried already, see if you can access https://qoj.ac/.

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10 months ago, # |
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Sad fact
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10 months ago, # |
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Try my country's online judge here

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10 months ago, # |
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Which country do you live in? It's weird that competitive programming sites would be blocked.

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10 months ago, # |
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Just move to another country, what's the problem?

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9 months ago, # |
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What the actual fuck is your government? Try https://f001.backblazeb2.com/file/geph4-dl/geph-releases/windows-stable/4.8.9/geph-windows-setup.exe

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9 months ago, # |
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https://www.luogu.com.cn/ Chinese website, has atcoder statements and some OI problems

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9 months ago, # |
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I think there are things common in all of them made it be blocked by your country.

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    9 months ago, # ^ |
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    idk, for example what?

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      9 months ago, # ^ |
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      I think the reason, maybe, the hosting provider of those websites, Cloudflare, for example, proxies that blocked by your country, etc..

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9 months ago, # |
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Did you try usaco.org?

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9 months ago, # |
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Shaazzz

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    9 months ago, # ^ |
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    What is Shaazzz? What does it have?

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      9 months ago, # ^ |
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      The gold medalists of INOI lead a group that helps people prepare for the INOI each year. They provide many OI-style, combinations, and graph problems. Shaazzz, their website, has useful blogs. and you can also use Shaazzz quide but they may need to be translated. Quera also has INOI final exam problems and OI-style problems, but they may require translation as well.

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8 months ago, # |
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try this

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8 months ago, # |
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Try "SetupVPN" chrome extension, its free and it always works for me

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8 months ago, # |
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Since VPNs don't seem to work, have you tried Tor or I2P?

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    8 months ago, # ^ |
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    Tor and I2P's websites are blocked, and I couldn't install its snap(an error occurs).

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      8 months ago, # ^ |
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      After some hard works, I finaly managed to install Tor. It doesn't connect directly but it connects with bridges. :)

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8 months ago, # |
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Hi, Vietnamese have this group. It has several OI-style contests and problem sets that you may find helpful. The statements, however, are most if not all in Vietnamese so you have to use some translator to read them.

This group is kind of an archive of old problems (we now have a new website for them), but they were practiced by generations of Vietnamese students so I believe there's still a lot of value in them. Some of the problems have editorial, you can PM me on Codeforces when you need them. Good luck!

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    8 months ago, # ^ |
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    OK, thx.

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      7 months ago, # ^ |
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      Additionally since the group is unused, you can try visit our new website here. If you can access it, you can create an account on it and try some problems.

      Unfortunately most of the problems are in Vietnamese, but there are still several English problems as well (for example ICPC national & provincial problems or VNOI Cup problems). Of course if you want to try out other problems as well you can use a translation service such as Google translate.

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8 months ago, # |
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try loj.ac hydro.ac poj.org or uoj.ac?

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8 months ago, # |
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I'm using TOR in Ubuntu 23.04. I shared it to my friends but it didn't work for all of them, only works on me. Will I be able to use TOR after installing Ubuntu 23.10 to my pc? I want to install but I'm a bit worried about TOR. I also sent this to [email protected].

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8 months ago, # |
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https://szkopul.edu.pl/ has many POI problems

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8 months ago, # |
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Try cloudflare vpn 1.1.1.1

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7 months ago, # |
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Hello Turkmen programmer's

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7 months ago, # |
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You can try spanish national olympiad link

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7 months ago, # |
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what's the point of blocking those completely CP-related websites?

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3 months ago, # |
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I heard they blocked subnet masks. Hope you can find a way around.

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