An awesome list for competitive programming! This is a project I started from late January 2016. My motive is that: Although there's fantastic information out there, I think they're still spread all over the place. Therefore, in my opinion it would probably be cool if there's an [awesome list](https://github.com/sindresorhus/awesome) for competitive programming! ( *It's now featured on the main list!* ) I'm actively updating the list here: [https://github.com/lnishan/awesome-competitive-programming](https://github.com/lnishan/awesome-competitive-programming) # Awesome Competitive Programming [](https://github.com/sindresorhus/awesome) A curated list of awesome `Competitive Programming`, `Algorithm` and `Data Structure` resources. Created with a view to connecting people to information, this list below contains a complete collection of all the fantastic resources I've collected over the course of my 11...

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SIT & JUB STAR Contest 2022 <center> <img alt="SIT" src="https://codeforces.me/predownloaded/b7/59/b7597e61079718f49f275cfc2b343e9c1461bb78.png" style="float:right; height: 250px; margin: 10px; max-width:50%;"/> </center> Hello, Codeforces! We are thrilled to announce the dates of our annual online programming competition, the **SIT & JUB STAR Contest 2022**, organized by the Schaffhausen Institute of Technology (SIT) in Switzerland and our partner Jacobs University Bremen (JUB) in Germany. Winners will have the chance to receive exciting prizes, including a full scholarship for **Master in Computer Science and Software Engineering** program. **<font color="#00a987">What is the SIT & JUB STAR Contest?</font>** The goal of the SIT & JUB STAR Contest is to promote interest in the field of Computer Science and Software Engineering, giving participants an opportunity to demonstrate their knowledge of programming. It is also a winning ticket for full scholarship to a master program. To partici...

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Educational Codeforces Round 32 Hello Codeforces! On [November 09, 18:05 MSK](https://www.timeanddate.com/worldclock/fixedtime.html?day=9&month=11&year=2017&hour=18&min=5&sec=0&p1=166) Educational Codeforces Round 32 will start. Series of Educational Rounds continue being held as [Harbour.Space University](https://harbour.space/) initiative! You can read the details about the cooperation between [Harbour.Space University](https://harbour.space/) and Codeforces in the <a href="http://codeforces.me/blog/entry/51208">blog post</a>. The round will be **unrated** for all users and will be held on extented ACM ICPC rules. After the end of the contest you will have one day to hack any solution you want. You will have access to copy any solution and test it locally. You will be given **7 problems** and **2 hours** to solve them. The problems were prepared by Mikhail [user:PikMike,2017-11-08] Piklyaev and me. Good luck to all participants! UPD: [Editorial](http://codeforces.me/blog/entry/55701). I a...

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How to study CLRS for Competitive coding Well, everyone should read this book from Start to end (From Basics to Masters). Here are my suggestion on How to read this Book. Reading and Understanding CLRS: 1. Use video lectures to understand the concept, and read the chapter from the book. Best site for CLRS lecture videos : Lecture 1: Administrivia, Introduction, Analysis of Algorithms, Insertion Sort, Mergesort Video Lectures | Introduction to Algorithms (SMA 5503) | Electrical Engineering and Computer Science | MIT OpenCourseWare Peteris Krumins has published a series of blog posts covering the lectures. You can also find his lecture notes for each video. Start with this one: http://www.catonmat.net/blog/mit.... What if you're not understanding Mathematical equations and Proofs, functions given in the Book? 1. Watch Videos on Discrete mathematics by Arsdigita University Course 02: Discrete Mathematics (Arsdigita University) : Free Download & Streaming : Internet Archive In parallel with it re...

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Introducing Egor Kulikov as World Finals 2013 official blogger Hi there! This is the first post in the ACM ICPC World Finals official blog. This year [Yandex](http://about.yandex.com/) is the local partner of the World Finals host &mdash; Saint Petersburg National Research University ITMO. We have a lot of former ICPC finalists working at Yandex, and some of them including me will work as analysts during the World Finals contest. Let me introduce my friend [user:Egor,2013-06-20] Kulikov from Yandex in Saint Petersburg, who will be the ICPC blogger. I am more than sure that he will provide an expert coverage on different aspects of the World Finals, and that's why. First and foremost, he was my teammate in the Moscow State University team for the World Finals 2007 in Tokyo, where we took bronze, so he knows everything from the inside. We had trained for five years to get there. The competition at MSU is always very strong, so in our case we basically had to win NEERC 2006 just to outrun our main rivals from the same university. They had alr...

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Competitive Programming Resources Hi, I decided to post this blog to share various books and resources I used for Competitive Programming! I feel that these books were beneficial to my Competitive Programming journey. [user:lnishan,2022-11-26] posted [blog](https://codeforces.me/blog/entry/23054) that has a lot of extensive resources. [user:kostka,2022-11-25] has also posted a [blog](https://codeforces.me/blog/entry/109275#comments) with a really detailed book that is definitely worth checking out! [Codeforces Education](https://codeforces.me/edu/courses) is also a really great resource! **General Competitive Programming Books:** - [Competitive Programming Handbook](https://cses.fi/book.pdf) - [Competitive Programming 3](https://github.com/prasadgujar/CompetitiveProgramming/blob/master/book/Competitive%20Programming%203.pdf) - [The Hitchhiker's Guide to the Programming Contests](https://comscigate.com/Books/contests/icpc.pdf) "Introduction to Algorithms" by Cormen et. al. "Algorithms" by...

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MIPT invites high school students to programming boot camp The Moscow Institute of Physics and Technology welcomes high school students to take part in the programming boot camp **Moscow Workshops Juniors**! The boot camp will be held **from February, 25 to March, 6.** The educational program includes daily studying contests, thematic lectures and practice. In a free time participants could join the popular science lectures, do sports, play the intellectual games and be involved in other activities. According to the results of the introductory contest the participants are divided into divisions depending on their skill level. Participants can choose the most interesting topics and make an appropriate training program. If a participant finds the curriculum too simple or difficult, he can change division. To take part in the camp, you have to pass qualifying online tours, its format is close to the Olympiad in Informatics. You can participate in several rounds or only in one tour, the ranking of the participants is made according to the...

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Teaching algorithms to high school students in Ethiopia Hi everyone! This summer I participated in the program AddisCoder 2019. It is a five-week intensive summer camp where high school students from different regions of Ethiopia learning the basics of programming and algorithms. Next summer the program will be held as well. It was an amazing experience because I met a lot of cool and passionate students, teaching assistants and professors. As for TAs, we were working on problems for students, helping them with exercises, giving mini-lectures and had a lot of fun exploring Ethiopia together in our free time. Students chosen for this program are good. They were selected by the Ministry of Education based on their achievements during studying in high school or applied themselves. Some students never used a computer before the program still being quite good at maths and it was exciting to see their advancement from that level to ability to write some simple algorithms. After the program, they have an opportunity to continue study in ...

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Educational Codeforces Round 75 [Rated for Div. 2] Hello Codeforces! On [contest_time:1251] [contest:1251] will start. Series of Educational Rounds continue being held as [Harbour.Space University](https://harbour.space/) initiative! You can read the details about the cooperation between [Harbour.Space University](https://harbour.space/) and Codeforces in the <a href="http://codeforces.me/blog/entry/51208">blog post</a>. This round will be **rated for the participants with rating lower than 2100**. It will be held on extended ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally. You will be given **7 problems** and **2 hours** to solve them. The problems were invented and prepared by Roman [user:Roms,2019-10-23] Glazov, Adilbek [user:adedalic,2019-10-23] Dalabaev, Vladimir [user:Vovuh,2019-10-23] Petrov, Ivan [user:Bl...

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An awesome list for competitive programming! This is a project I started from late January 2016. My motive is that: Although there's fantastic information out there, I think they're still spread all over the place. Therefore, in my opinion it would probably be cool if there's an awesome list for competitive programming! ( It's now featured on the main list! ) I'm actively updating the list here: https://github.com/lnishan/awesome-competitive-programming Awesome Competitive Programming Awesome A curated list of awesome Competitive Programming, Algorithm and Data Structure resources. Created with a view to connecting people to information, this list below contains a complete collection of all the fantastic resources I've collected over the course of my 11-year competitive programming career. I hope you'll find it useful :) What is competitive programming? — Quora Contributing Please kindly follow CONTRIBUTING.md to get started. You can also contribute by sharing! Share the list with your classmates, your friends and eve...

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Coursera.org — free online courses Someday I was surfing the internet and found an interesting website --- [Coursera.org](https://www.coursera.org/). For those, who doesn't know, this site is a free collection of plenty of online courses related to many branches of science. It differs from the others in several ways, the most important is there are deadlines for assignments. So now you should be planning your time more effectively. [cut] <p> Resource already contains 111 courses from up to 17 leading universities and the list grows almost everyday. You can find any course: from [Quantum mechanics and quantum computing](https://www.coursera.org/course/qcomp) and [Scala function programming](https://www.coursera.org/course/progfun) to "[How things work](https://www.coursera.org/course/howthingswork1)" <p> More detailed information about learning: several times a week there are a new lecture, after watching it you are offered to take an assignment. Judging systems differ, but there is one thing in common --- you shoul...

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AlgoTrade Hackathon 2026 Hello Codeforces! We are excited to invite you to **AlgoTrade 2026**, a student-focused hackathon centered on algorithmic trading, taking place in Zagreb, Croatia this May. <p align="center"> <img src="/predownloaded/32/c1/32c1fe59369ed9f0788ea722d45362a57f5d2219.png"> </p> --- **What is it?** A 24-hour hackathon built around a custom simulated market environment. You and your team will design, optimize, and implement algorithmic trading bots under time constraints. The hackathon is preceded by a few days of lectures from top industry quants and engineers to help you get up to speed with the domain. --- **Event Details** - Educational Phase: May 4–7, 2026 - Opening + Networking: May 8, 2026 - Hackathon: May 9–10 (24h) - Location: Mozaik Event Center — Zagreb, Croatia - Prize Pool: **€10,000** --- **The Sponsors** If you are looking to break into the quant industry, this is a massive networking opportunity. Our partners include: Jan...

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Any solution to the problem of 'aging'? Dear competitive coders, (this is as lengthy as 'Codeforces problem statements' and irrelevant to improving your skills, so never mind it if you are short of time, but if you could read it and find an 'AC solution' to my problem, I would like to deeply appreciate it) The past 2 years made the most tedious period of my life. Time has revealed to me a miserable truth that I am too old to be a coder or even anything. If one takes a look at my rating graph, it would be crystal clear that my 2 years of lifetime has been wasted. The line was just fluctuating around some certain points depending on my emotional states (approximately 1600 at first, then 1850 thanks to the recent "Rating Inflation", I was actually happy with it for a while though). No improvement, yeah, 2 years without any improvement at all. I start to wonder if I am really aging that fast. Never can I forget the first time I started coding, 8 years ago. When my friends were learning Excel, I was coding my the first inf...

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My Course "Advanced Algorithms and Data Structures" at Harbour.Space University <img src="/predownloaded/c0/52/c052c92fc998292e9705f9924413b581d13515ba.jpg" style="float:right; margin: 0 1em;"/> Hi, Codeforces! This is not an ordinary post from me. This is not an announcement of new features or a championship, but I'm no less enthusiastic. I am glad to inform you that from January 29 to February 16, 2018 I will be giving the course <a href="https://goo.gl/u5nTmk">"Advanced Algorithms and Data Structures"</a> in <a href="https://goo.gl/zDSsaQ">Harbour.Space University (Barcelona, Spain)</a>. The course will be in English. The students of this course will not only be students of Harbour.Space, but is open to all! Who wants to join? This course isn't just for Harbour.Space students, it is also open to Codeforces participants, who will be offered a special price, 1000 EUR. The cost does not include travel or accommodation. <center style="margin:20px;"> <a style="font-size: 24px; padding: 8px 14px; background-color: #673AB7; color: white;" href="https:/...

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My Course at Harbour.Space University: Advanced Algorithms and Data Structures (January, 2019) <img src="/predownloaded/c0/52/c052c92fc998292e9705f9924413b581d13515ba.jpg" style="float:right; margin: 0 1em;"/> Hi, Codeforces! I am glad to announce and invite you to the second launch of my course on algorithms and data structures. On 7-25 of January, 2019, I will be giving the course <a href="https://goo.gl/u5nTmk">"Advanced Algorithms and Data Structures"</a> at <a href="https://goo.gl/zDSsaQ">Harbour.Space University (Barcelona, Spain)</a>. It will be in English, and is not limited to Harbour.Space students &mdash; anyone is welcome! Who wants to join? This course isn't just for Harbour.Space students, it is also open to Codeforces participants, who will be offered a special price, 1000 EUR. The cost does not include travel or accommodation. <br/> <center style="margin:20px;"> <a style="font-size: 24px; padding: 8px 14px; background-color: #673AB7; color: white;" href="https://goo.gl/u5nTmk">Register for the Course &rarr;</a> </center> The curriculum will i...

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Books... Hello, community ! I have scrolled some great blogs on [Codeforces](www.codeforces.com) and some websites(mentioned below) and found some resources. I hope that can help you, me and others. ## Books for Competitive Programming - [Competitive Programming](https://cpbook.net/), by Steven and Felix Halim. (The first edition is free for [download(pdf)](http://www.comp.nus.edu.sg/~stevenha/myteaching/competitive_programming/cp1.pdf)) - [Programming Challenges: The Programming Contest Training Manual](https://www.amazon.com/Programming-Challenges-Contest-Training-Computer/dp/0387001638), by Steven Skiena and Miguel Revilla - [Competitive Programmer's Handbook](https://cses.fi/book/index.html), by Antti Laaksonen. (Free to [download(pdf)](https://cses.fi/book/book.pdf)) - [Computational Geometry: Algorithms and Applications](https://www.amazon.com/Computational-Geometry-Applications-Mark-Berg/dp/3540779736), by Mark de Berg, Otfried Cheong, Marc van Kreveld, Mark Overmars...

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[Training] [Arabic] JUST Summer Training 2018 — Segment Tree Hello Codeforces, On July 2018 the JUST Summer Training 2018 was held in the Jordan Univeristy of Science and Technology Presented By Ibraheem Tuffaha [user:Vendetta.,2017-09-02], Covered one topic: Segment Tree. The training is published on youtube on [user:SolverToBe,2018-09-14] channel *note: language of training is Arabic. ### **Lecture 1** <spoiler summary="Segment Tree I"> Part 1 | [Segment Tree &mdash; Range Sum Query](https://www.youtube.com/watch?v=KR7icII-RWI&index=1&list=PLPSFnlxEu99GKcA1y0T9d-sxcUdOyWy3x) Part 2 | [Range Minimum Query &mdash; Problem CodeForces 622C](https://www.youtube.com/watch?v=8QKIAcPyagA&index=2&list=PLPSFnlxEu99GKcA1y0T9d-sxcUdOyWy3x) Part 3 | [Problem CodeForces 597C](https://www.youtube.com/watch?v=WRvpG8DTgzk&index=3&list=PLPSFnlxEu99GKcA1y0T9d-sxcUdOyWy3x) </spoiler> ### **Lecture 2** <spoiler summary="Segment Tree II and Lazy Propagation"> Part 1 | [Problem Sereja and Brackets &mdash; CF 380C](https://www.youtube.com/w...

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Design and Analysis of Algorithms : MIT OpenCourseWare MIT's [Design and Analysis of Algorithms Course](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-design-and-analysis-of-algorithms-spring-2015/lecture-videos/) from Spring 2015 has some interesting topics which may be useful for programming contests, like: - Convex Hull - Advanced DP - Max Flow, Min Cut - Matching - Linear Programming, Simplex I hope this can be useful for many people :)

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HSE studies Hello team end DONT WORRY))))))))xDDD thx for helping in [user:0icq,2024-01-19] about a can going studi in HSE VERY BIG TY :D (recspect) and super thaks to [user:maxan,2024-01-19] becouse thats very nice pupil in mipt technologies university (call). Maxan is very respectful nice mipt student LOL For starting i can want to say that it was so hardy to me to being student HSE (cool). It was so compressive for my psycho heal because i was thought a big and my brain is so dead and i wanted to going go for a walk with my friends [user:islam_ahmed,2024-01-19] (nice to meet you) and [user:ivan_09090,2024-01-19] (BIG bRO) but I WAS SO STREIGHT AND NEED TO shoes. ok LETS GO to review HSE letsplay xDD its my friend his brain so smart [user:0icq,2024-01-19]  thats a his social network page in HSE internet https://www.hse.ru/staff/bigshishiga like and subscribe him plese is so close well then about HSE is so comfortable place in the ...

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deltixlab’s interview: Deltix rounds back story _I am very glad to introduce my guests from [Deltix](https://deltix.io):_ _Aliaksandr [user:sdryapko,2021-12-10] Drapko, the Head of Technology of [CryptoCortex](https://deltix.io/products/cryptocortex.html) product and_ _Vladislav [user:Vladik,2021-12-10] Vishnevsky, the coordinator of all competitive programming activities by Deltix and the key developer of [MarketMaker](https://deltix.io/products/marketmaker.html) product._ _I am proud to be their compatriot, so let me start with some belorussian words of greetings_ _- Прывiтанне, Аляксандр і Уладзіслаў!_ - Прывiтанне, Наталля! _- Deltix is the sponsor of the Belarus National School Olympiad in Informatics. Last spring you represented Deltix at the National Final award ceremony. The award ceremony was very touching for the winners. But what about you? How did you feel presenting them prizes? What were you thinking about at this moment?_ ![ ](/predownloaded/b9/ef/b9ef3e92cbfd2d50ca984d6870ae9a16fd788db4.jpg...

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MIT OCW — Advanced Data Structures I've decided to watch [these](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-851-advanced-data-structures-spring-2012/lecture-videos/) lectures, but I don't know which ones are more important (common) for competitive programming. What do you suggest?

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Splay Tree Analysis hello codeforces, I have been trying to learn about splay trees from [this](https://www.cs.cmu.edu/~sleator/papers/self-adjusting.pdf).In the analysis of alternate implementations insertion and deletion it has been mentioned that this follows from a modification of the proof of lemma 1(Access lemma).  I could find proofs for this when all weights are taken as 1 for example [here](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-854j-advanced-algorithms-fall-2005/lecture-notes/dzhang_splaytree.pdf)  but i could'nt find one for the general weighted case nor can prove it myself. so can anyone please help ? thanks!

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Algorithm Competition Summer Camp 2019 in Istanbul — June 16-25 — Div. A. We are inzva; a non-profit organisation based in Istanbul, Turkey, that brings Turkish computer science students, AI and Algorithm enthusiasts and academics together. We invite you to test yourself and your team to join the Expert division of Algorithm Competition Summer Camp 2019 between June 16-25. Expert Group is an ICPC-oriented division of ACSC ‘19, in which experienced university students will have the opportunity to raise their skill level in teams, work with international students and prepare for international contests through practices, lectures, and problem-solving sessions. There will be 10 or more teams in Expert Group and the discussions will be carried out in English. The coaches: -Vitalii Herasymiv [https://codeforces.me/profile/witua?locale=en](https://codeforces.me/profile/witua?locale=en) [http://myicpc.live/World-Finals-2019/people/819](http://myicpc.live/World-Finals-2019/people/819) -Andrii Makar [https://codeforces.me/profile/Andrew_Makar](https...

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Deltix Educational Resource We are excited to announce a new educational resource that is coming soon under the **Deltix** umbrella. Here is a list of paid part-time positions for teachers who want to join our rock star team: - Math & statistics - Algorithms & data structures - Data science - Advanced programming languages - Systems architecture - Networks and clouds - Practical time-series analysis - Machine learning - Security - Real-time backend (architecture) - Operating systems - Product strategy, vision, marketing and innovation Each discipline will include lectures and practical exercises. Some of them will also offer mentorship for the final project. Our resource will not be publicly available. Excited about the opportunity? Complete the form at https://forms.gle/spXr3DaSYmRYePER9 and we will get back to you with further information. Fill free to drop us a line at [email protected] if you have any questions.

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Announcement: 1st Hello India x Russia Programming Bootcamp  Hello, Codeforces! We are pleased to announce the [**1st Hello India x Russia Programming Bootcamp**](http://in.harbour.space/icpc/acm-icpc-hello-india-bootcamp-spring-2018/?utm_source=Codeforces), with [Amrita School of Engineering](https://www.amrita.edu/campus/amritapuri), [Moscow Institute of Physics and Technology](https://mipt.ru/en/) in collaboration with [Moscow Workshops ACM ICPC](https://it-edu.mipt.ru/en/about_workshops), and of course Codeforces! The boot camps will be held **from March 22nd to the 30th** in both India and Russia. We would like to bring your attention to the **new Bootcamp Features:** Hello India x Russia Programming Bootcamp and Moscow Workshops ACM-ICPC will be running both boot camps side by side, every day each camp will be competing in parallel, 7,500 kilometers from each other. In India and Russia, the Coordinators of the Programming Committee will be both **Gleb**...

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Coursera Hello I want to introduce [Coursera](https://www.coursera.org/) ( for how are not familiar yet) that helps you find some interesting courses , in any field of science , taught by experienced Profs that works like real class. by that I mean it includes : * Video Lectures (With several Explanation even about a simplest thing) * Any kind of problems ( e.g programming and theory problems) * And good discussion forums. * Some of these courses give you degree ( statement of accomplishment ) that signed by the instructor. And most important thing that you got all of these for free. I take [Algorithms: Design and Analysis, Part 1](https://www.coursera.org/course/algo) , [Analytic Combinatorics, Part I](https://www.coursera.org/course/introACpartI) & [Games without Chance: Combinatorial Game Theory](https://www.coursera.org/course/cgt) , and I recommend to you to take them. Have fun with these courses!

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How to Prepare non-CP topics in Computer Science?? Can anyone please ,provide links or material (video lectures) ,from where you prepare for your non &mdash; cp topics : **1. Computer Architecture and Organisation (mips 8085, pipelining,etc.)** **2. Operating System** I searched few videos on youtube ,but many of them were confusing (too long) and missing some topics.

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Metaverse- Take a leap into the Future Facebook’s decision to rename itself with the new corporate name Meta Platforms Inc. -marked an appropriate endpoint for a year in which the relatively murky concept of the Metaverse became one of the most hyped buzzwords in technology. Many people laughed when Facebook renamed itself, but do you actually know the reason behind it?? Metaverse has set the trend for all internet things so much that it now has its own Wiki definition. Metaverse has already become a part of our lives without us knowing about it. People who play Roblox, Fortnite, Minecraft, etc., are already living in metaverses and won’t likely hesitate to join another where their friends and the things they enjoy all exist. -History: Before understanding metaverse, let us go back to when the internet was invented. British computer scientist Tim Berners-Lee published the first website on August 6, 1991. He dreamt of linking together information with hypertext that could be viewed via a web browser. Years later, he c...

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Useful links <p class="MsoNormal"><span class="apple-style-span"><b style="mso-bidi-font-weight: normal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;; color:red;background:white;mso-ansi-language:EN-US">Hi everyone!</span></b></span><span class="apple-converted-space"><b style="mso-bidi-font-weight:normal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:red;background: white;mso-ansi-language:EN-US">&nbsp;</span></b></span><span class="apple-style-span"><b style="mso-bidi-font-weight:normal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:red;background: white;mso-ansi-language:EN-US">Here are the useful links of olympiad programming.</span></b></span><span class="apple-converted-space"><b style="mso-bidi-font-weight:normal"><span style="font-size:10.0pt;font-family: &quot;Arial&quot;,&quot;sans-serif&quot;;color:red;background:white;mso-ansi-language:EN-US">&nbsp;</span></b...

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