2020-06-09 01:20:37 +00:00
---
2020-06-15 23:19:07 +00:00
id: oly
2020-06-09 01:20:37 +00:00
title: "Olympiads"
author: Benjamin Qi
---
2020-06-09 04:12:18 +00:00
Once you've reached Platinum, it may be helpful to practice with problems from other (inter)national olympiads.
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2020-06-08 19:51:58 +00:00
> Hello, Which online judge should I practice more to do well in **IOI** ?
> the closest OJ for IOI style?
> Do you have any magic problems sets to suggest?
## National
See [here ](https://ioinformatics.org/page/members/7 ) for additional links. The [OI Checklist ](https://oichecklist.pythonanywhere.com/ ) is a great way to track your progress. :)
* [USA ](http://www.usaco.org/ )
* Format
* Bronze, Silver, Gold, Platinum Divisions
* 3 problems, 4 hrs
* [Very Old Gold Probs ](http://tjsct.wikidot.com/usaco/ )
* [USACO Training ](http://train.usaco.org/usacogate )
* not particularly beginner-friendly but still helpful
* somewhat outdated in the sense that it lacks topics which are now quite common (ex. segment tree)
* if you're unsure about whether it will be useful, you might as well try it and see where you get stuck :P
* personally, I did the first five chapters in one summer (though I had to look up some hints ...)
* [article :o ](https://www.usenix.org/legacy/bodinfo/bod/bodmarch10/future.pdf )
* [Japan ](https://www.ioi-jp.org/ )
* [Open Contests ](https://contests.ioi-jp.org/ )
* see [oj.uz ](https://oj.uz/problems/source/45 )
* [Poland ](https://szkopul.edu.pl/portal/ )
* [Solutions (in Polish) ](https://www.oi.edu.pl/l/40/ )
* [Canada ](https://cemc.math.uwaterloo.ca/contests/computing.html )
* [WCIPEG ](https://wcipeg.com/problems/cat%3Dccc%2Cshow%3D50 )
* [DMOJ ](https://dmoj.ca/problems/?category=24 )
* [Croatia ](http://hsin.hr/coci/ )
* not full feedback
* [Indonesia ](https://competition.ia-toki.org/contests )
* monthly
* [Philippines ](https://noi.ph/past-problems/ )
* Other
* [China (WCIPEG) ](https://wcipeg.com/problems/cat%3Dnoi%2Cshow%3D50 )
* [Lithuania ](http://online.lmio.lt/ )
* [Australia ](https://orac.amt.edu.au/ )
* [Italy ](https://training.olinfo.it/#/overview )
## International
* IOI
* Online Judges
* [Yandex ](https://contest.yandex.com/ioi/ )
* [WCIPEG ](https://wcipeg.com/problems/cat%3Dioi%2Cshow%3D50 )
* [DMOJ ](https://dmoj.ca/problems/?category=5 )
* [oj.uz ](https://oj.uz/problems/source/22 )
* Misc
* [List of 2017 IOI Participants ](http://weaselcrow.com/pro/cf/ioi2017/ )
* [IOI 2018 Syllabus ](https://people.ksp.sk/~misof/ioi-syllabus/ioi-syllabus.pdf )
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* [Baltic ](http://www.boi2017.org/ ) (BOI)
* [Central European ](http://ceoi.inf.elte.hu/ ) (CEOI)
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* submit BOI / CEOI at [CSES ](https://cses.fi/ )
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* [Balkan ](http://boi2018.ro/home )
* [International Zhautykov ](https://oj.uz/problems/source/24 ) (IZhO)
* [Asia-Pacific ](http://apio-olympiad.org/ ) (APIO)
* [International Informatics Olympiad in Teams ](http://ioit.altervista.org/2018-teams-and-contests-.html ) (IOIT)
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* [InfO(1) cup ](http://info1cup.com/ )