Codeforces Round #845 (Div. 2) and ByteRace 2023 Hello, Codeforces! NJACK &mdash; the Computer Science Club of IIT Patna is excited to invite you to **ByteRace 2023** &mdash; [contest:1777] under **Celesta** &mdash; the annual Techno-Management Fest of IIT Patna. The contest will take place on [contest_time:1777]. **This round will be rated for participants with rating lower than 2100.**  Many thanks to all the people who made this round possible: - The problems were authored and prepared by me, [user:quantau,2023-01-19], [user:mayankfrost,2023-01-19], [user:ShivanshJ,2023-01-19], [user:Crocuta,2023-01-19] and [user:AwakeAnay,2023-01-19]. - [user:irkstepanov,2023-01-19] and [user:KAN,2023-01-19] for coordinating the round! - [user:jenishmonpara,2023-01-19], [user:100gods,2023-01-19] and [user:V_S_M,2023-01-19] for their guidance throughout the process. - VIP testers: [user:YashPant,2023-01-19] and [user:Newtech66,2023-01-19] <3 - Shoutout to [us...

Full text and comments »

Codeforces Round #956 (Div. 2) and ByteRace 2024 Hello, Codeforces! NJACK — the Computer Science Club of IIT Patna is excited to invite you to [contest:1983] under Celesta — the annual Techno-Management Fest of IIT Patna. The contest will take place on [contest_time:1983]. This round will be rated for participants with rating lower than 2100.  Many thanks to all the people who made this round possible: - The problems were autho<span style="color:#e31919;">r</span>ed and prepared by [user:AwakeAnay,2024-07-05], [user:ShivanshJ,2024-07-05], [user:TimeWarp101,2024-07-05], [user:DC17,2024-04-12], [user:BlazingDragon,2024-07-05], [user:Swap-nil,2024-07-05], [user:Pew_Pew.,2024-07-05] and [me](https://mirror.codeforces.com/profile/MrSavageVS). - Spec<span style="color:#e31919;">i</span>al thanks to [user:ScarletS,2024-06-01] for <span style="color:#e31919;">c</span>oordinating ...

Full text and comments »

Invitation to AlgoThugs 2026 by NJACK IIT Patna Hello Codeforces! We’re thrilled to invite you to the 2nd edition of **AlgoThugs**, the competitive programming event by IIT Patna, organized as part of **Apeireon**, the annual tech fest conducted by **NJACK**.  **AlgoThugs** is a solo algorithmic programming contest with this edition consisting of 9-11 problems to be solved within a 3.5 hour duration. At least one problem in this contest will be **interactive**, so please make sure to read the guide for **[interactive problems](https://mirror.codeforces.com/blog/entry/45307)** before the contest. This contest also contains at least one **run-twice (communication)** problem. If you are unfamiliar with this type, we strongly recommend reading the guide for **[run-twice problems](https://mirror.codeforces.com/blog/entry/147996)** beforehand. - **Date & Time**: Tuesday, April 14, 2026 (21:05 IST) - **Duration**: 3.5 hours - **Mode**: Online - **Platform**: Codeforces...

Full text and comments »

Indian ICPC Camp 2024 (and scripts to host your own camps!) Greetings Codeforces! ===================== IIIT Hyderabad Programming Club is excited to announce Indian ICPC Camp 2024, a collaborative effort from top Indian colleges and universities, sponsored by [Databricks](https://www.databricks.com/). This camp offers an excellent opportunity to advance your skills in competitive programming and team contests. <center> <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Databricks_Logo.png/440px-Databricks_Logo.png"> </center> **TL;DR** First contest will be held on September 22. One contest almost every Sunday. The deadline to fill the form is 23:59 IST, 15 September 2024. Scripts for hosting your own camp at the end. [Registration Form](https://forms.gle/F6Ttn3KnrGyWXcPh7) [Discord Server](https://discord.gg/W8xv5kfFay) About ICPC Camp --------------- ### Contests We have planned ICPC style contests (5 hours, with difficulties corresponding to Indian regionals and higher) over the next 8+ weeks. Eac...

Full text and comments »

India ICPC — Amritapuri 2022 Regionals Round (With live commentry) Hi Codeforces, **ICPC Amritapuri 2022 Regionals Round** is happening right now on Codedrills. Live ranklist: https://icpc.codedrills.io/contests/icpc-amritapuri-2022-regional-round/scoreboard Live commentary: We will be live on [codedrills youtube channel](https://www.youtube.com/watch?v=UyJ5nzMuBeM). We will be starting soon. Update: We are live now. Contest Details - Contest Link — ICPC Amritapuri 2022 Regionals Round - Date & Time — 2 April 2023, Sunday, 9:00 IST - Duration — 5 Hours - There will be 12 problems to solve - Will follow standard ICPC scoring system (20 minutes penalty and 1 point per problem) - The questions may not be sorted by difficulty - Contest link &mdash; https://icpc.codedrills.io/contests/icpc-amritapuri-2022-regional-round **Edit &mdash; Credits** **Chief Judge:** Jatin ~jtnydv25,2023-04-13 Yadav **Setters:** Janmansh ~...

Full text and comments »

Invitation to Apeireon'20 Code Golf Challenge Hello guys!! Greetings from **NJACK**, the Computer Science Club of IIT Patna, We feel very excited to announce our very first edition of **Apeireon** , the annual coding fest of the Department of Computer Science and Engineering, IIT Patna. The fest will be packed with a plethora of fun events. I would love to thank you all for the huge participation in our Hacking Challenge and making it a grand success, Introducing this time, **Code Golf**, a competitive coding event in which the aim is to solve problems while writing as short code as possible. Imagine you are giving a coding contest and have spent the last 20 minutes on a problem and finally you submit it and it's accepted. You later find that some top-level coders have done it in less than a minute! What is their secret? Do they have a typing speed more than 20X that of a normal person? The real answer is NO, usually a high speed isn't the result of unusual typing speed, but that of super-short and elegant code. In...

Full text and comments »

ICPC Indonesia COMPFEST 12 Multi-Provincial Contest Online Mirror Editorial Hi everyone, sorry for the considerable delay. It turns out, we were exhausted yesterday from supervising two contests back-to-back. We are surprised by the number of participants in the online mirror. And I hope you enjoy the problems :) Our big surprise was problem B. We were setting it to be a medium problem. Turns out, maybe the observation is not that obvious. **fun fact:** Initially, we don't plan to have any particular naming theme other than the obligatory first letter matches the problem order. However, when naming 6 out of 9 problems, one of my committee member noticed that **5 problems** have A of B theme. So, we decided to continue using this theme. Here are the authors and first solvers for all problems: **A &mdash; Arena of Greed** Author: [user:julianfernando,2020-09-28] Expected difficulty: Medium Tag: greedy First solver: [user:kotamanegi,2020-09-28] **B &mdash; Blue and Red of Our Faculty!** Author: [user:dewa251202,2020-09-28], [user:...

Full text and comments »

ByteRace 2k19!! Results and Editorials Hi guys, I would like to thank all participants for making this event a grand success and specially thank [user:Journey_Begin,2019-11-16], [user:darklight13,2019-11-16], [user:se7enth_hea7en,2019-11-16], [user:kunj017,2019-11-16], [user:samraj2k,2019-11-16], [user:Gauri_Jain,2019-11-16] and [user:hackcyborg,2019-11-16] for the problem setting and testing efforts and specially for actively managing the queries during contest!! So, without wasting more time I'd like to congratulate our winners: 1. [user:nuip,2019-11-16] 2. [user:amoo_safar,2019-11-16] 3. [user:pshishod2645,2019-11-16] 4. [user:kimden,2019-11-16] 5. [user:scopeInfinity,2019-11-16] Based on the leaderboards following people have qualified for prizes: Overall top 3: 1. [user:nuip,2019-11-16] 2. [user:amoo_safar,2019-11-16] 3. [user:pshishod2645,2019-11-16] Top 5 Indians: 1. [user:pshishod2645,2019-11-16] 2. [user:scopeInfinity,2019-11-16] 3. [user:cerberus97,2019-11-16] 4. ...

Full text and comments »

Invitation to Apeireon'20 Mystery Language Challenge Hello guys!! Greetings from **NJACK**, the Computer Science Club of IIT Patna, We feel very excited to announce our very first edition of **Apeireon** , the annual coding fest of the Department of Computer Science and Engineering, IIT Patna. The fest will be packed with a plethora of fun events. Hope you all had fun debugging codes in our hacking challenge. Introducing this time, **Mystery Language**, an event that requires you to code a contest in a language which would be announced minutes before the contest. A Competitive Programming contest with a slight difference, submit your solutions in a language, which might be unknown to you. The language will be announced 20 minutes prior to the contest. The contest will have 5-6 problems. This will give everyone an opportunity to evolve your skill to quickly adapt to a newly given framework or technology which is a very important skill in today’s rapidly growing techno-management corporate world. **Mystery Language Reveal...

Full text and comments »

Invitation to Byterace 2k20!! Hey Codeforces!! Greetings from **NJACK**, the Computer Science Club of **IIT Patna**, We present to you **ByteRace 2k20**, as a part of our annual technical fest, Celesta. The contest will be held on _Codechef_ and is rated for all Div2 participants! _(Rating < 1800)_ [**Date and Time**](https://www.timeanddate.com/worldclock/fixedtime.html?msg=ByteRace+2k20&iso=20201229T1430&p1=1440&ah=2&am=30): It will take place on 29th December 2020, 20:00 IST to 22:30 IST. (IST = UTC+5.5) It will be an ICPC styled contest with 7 problems. Link to the contest: [https://www.codechef.com/BYTR2020](https://www.codechef.com/BYTR2020) We would like thank our problem-setters: [user:V_S_M,2020-12-27], [user:jenishmonpara,2020-12-27], [user:aditigoel,2020-12-27], [user:Nihal0002,2020-12-27], [user:100gods,2020-12-27] and our organizers: [user:kunj017,2020-12-27] and [user:hackcyborg,2020-12-27]. Special thanks to the round coordinator [user:jtnydv25,2020-12-27] and our testers: [...

Full text and comments »

Invitation to Apeireon'20 Codesprint 360 Hey Codeforces! Greetings from **NJACK**, the Computer Science Club of **IIT Patna** We feel very excited to announce our very first edition of **Apeireon**, the annual coding fest of the Department of Computer Science and Engineering, IIT Patna. I would like to thank you for your participation in our previous events and making them a grand success. Introducing this time ***Codesprint 360***, a competitive coding event in which the aim would be to solve problems as fast as possible. Are you a speedster, if not this contest requires you to be one! You will be given 180 min (10800 secs precisely) to solve **60** problems. The problems will be on the easier side but you will have to race against time. Most of the problems have been prepared by CS freshmen and special thanks to [user:SHINIGAMI_07,2020-04-12], [user:shobhitsahil1507,2020-04-12], [user:Nihal0002,2020-04-12], [user:abhinavdutta,2020-04-12], [user:V_S_M,2020-04-12] for their contribution and [user:starnyC,2...

Full text and comments »

Byterace 2K17 IIT Patna Hello Codeforces! I would like to invite you all to [Byterace 2K17](https://www.codechef.com/BYTR2017) to be held on codechef. It is scheduled on [Wednesday 15th February 2017, 9:00PM IST](https://www.timeanddate.com/worldclock/fixedtime.html?msg=Byterace+2017+IIT+Patna&iso=20170215T1530&p1=1440&ah=3). <br>The contest will be 3 hours long and will have 6 problems.<br>It has been prepared by me([user:100pi,2017-02-14]), [user:i_love_ayrawhsia_nodnat,2017-02-14] and [user:cc15,2017-02-14]. We have given a lot of effort in making the problems and hope that you would like them. Prizes ------------------ - 1st Prize 5,000 INR - 2nd Prize 3,000 INR - 3rd Prize 2,000 INR ) ### Note It is not necessary to be a college student to win prizes. Just fill "NA" in college field in the google doc given on the contest page. ### Update Problem authors and their respective problems-<br> [u...

Full text and comments »

Invitation to Apeireon Hacking Challenge Hey Codeforces! Greetings from NJACK, the Computer Science Club of IIT Patna, We feel excited to announce our very first edition of Apeireon , the annual coding fest of the Department of Computer Science and Engineering, IIT Patna. The fest will be packed with a plethora of fun events for all our dear "logicians". Introducing this time, Hacking Challenge, an event that requires you to think about the edge cases for the problems. The event is analogous to the process of hacking where we have to find loopholes in a built system. Here, you will be given a problem and its partially accepted solution (a code which seems to be correct but fails on some of the test cases), and you as ‘the debugger’ have to find an ‘edge’ test case where it fails. The problems have been prepared by [user:eThAnE,2020-03-27], [user:MinorMiracle,2020-03-27], [user:Redemptioner,2020-03-27] and [user:ElusiveDream,2020-03-27]. 1st Prize : 5000 INR 2nd Prize: 3000 INR 3rd Prize: 2000 INR Ranks...

Full text and comments »

ByteRace 2K18 IIT Patna Hello Codeforces! We would like to invite you to participate [Byterace 2K18](http://hck.re/b2183) to be held on HackerEarth. The contest is being organised by NJACK(Not Just Another Computer Klub!) IIT Patna. A 3-hour algorithmic competitive programming contest which will test your logical, analytical and algorithmic skills is brought to you as a post Celesta(IIT Patna techno-management fest) event. **Date**:- 1st November 2018 , Thursday.<br /> **Timmings**:- 08:30pm IST to 11:30pm IST.<br /> #### Prizes:- * 1st Prize 5,000 INR + HackerEarth T-shirt<br /> * 2nd Prize 3,000 INR + HackerEarth T-shirt<br /> * 3rd Prize HackerEarth T-shirt<br /> 

Full text and comments »

Teams going to ICPC WF 2024 (Kazakhstan 2024) — WIP List Hi there! While we're waiting for the formal invitations to the ICPC World Final 2024 &#127880;, let's start the new post for the incoming competition, keeping the same idea of the previous blogs. Please add a comment with your team information and I will add it to the post. Info preferred: **{Handles on CF (otherwise, real name), Region, Country, University}** If you see some mistake on the teams, any kind of correction would be appreciated &#128516; </table> # Top 15 Over-All <table><thead><tr><th>Rank</th> <th>Country/Region</th><th>University</th> <th>Member1</th> <th>Member2</th> <th>Member3</th> <th>Rating</th></tr> </thead> <tr><td>1</td><td>USA</td><td>Swarthmore College</td><td>[user:Geothermal,2024-09-08]</td><td>[user:silxi,2024-09-08]</td><td>[user:nitrousoxide,2024-09-08]</td><td>3569.1801 </td></tr> <tr><td>2</td><td>China</td><td>Tsinghua University</td><td>[user:Rebelz,2024-09-08]</td><td>[user:qazswedx2,2024-09-08]</td><td>[user:hehezhou,2024-09-08]...

Full text and comments »

Byterace 2k19 Hey Codeforces! NJACK the programming club of IIT Patna presents to you our annual algorithmic event ByteRace 2k19. The contest will take place on HackerEarth on [15th November 21:00-23:30 (IST)](https://www.timeanddate.com/worldclock/fixedtime.html?msg=ByteRace+2k19%21%21&iso=20191115T21&p1=176&ah=2&am=30) The contest will be ACM-style with 7-8 problems. Thanks to the following people for making the contest: [user:nightmare05,2019-11-12] [user:Journey_Begin,2019-11-12] [user:samraj2k,2019-11-12] [user:hackcyborg,2019-11-12] [user:darklight13,2019-11-12] [user:se7enth_hea7en,2019-11-12] [user:Gauri_Jain,2019-11-12] Link to the contest: https://www.hackerearth.com/challenges/college/byterace2k19/ Prizes : 1st Prize 7500 INR 2nd Prize 5000 INR 3rd Prize 2500 INR HackerEarth T-shirt to top-5 Indian participants. For prizes fill the following form : https://forms.gle/K2ueg7QXkH9R2hqR9

Full text and comments »

CodeCharades 2K19 Hola amigos..! <br> Tighten your seatbelts and be prepared with all your skillset ‘Coz it’s high time for a Code-storm where all the champions will thrive but only a few will survive. So here comes the very first edition of “CodeCharades”, an online competitive coding championship presented by Codechef Chapter: IIT Patna, in association with ANWESHA & CodeChef as coding partner..! And yes, the winners will be rewarded with amazing prizes worth ₹5k and 250 codechef laddoos(for top 3 partcipants). <br> Date and time: 21st Jan, 2019, 9PM-11PM. <br> The contest will be hosted on [codechef.com](http://www.codechef.com) . <br> P.S. We won't go easy on you!!! Follow this link to register yourself for the contest... [click here](https://docs.google.com/forms/d/e/1FAIpQLSchklFBWuT-wZWMERbBCcu4fnoEDd613XjmYlNaiA2aCEs7IQ/viewform?usp=sf_link) !! FOR MORE INFORMATION !! <br> Follow this link for facebook page...<br> [https://www.facebook.com/IITPCHEF](https://www.face...

Full text and comments »

Teams going to ICPC WF 2022 (Egypt 2023) — WIP List Hi there! While we're waiting for the formal invitations to the ICPC World Final 2023, let's start the new post for the incoming competition, keeping the same idea of the [previous blog](https://mirror.codeforces.com/blog/entry/102593) As many of you already know, next WF will be something like a two-in-one competition, without knowing the actual format yet. I think it would be good to make two differents post, one per WF, because otherwise it would probably be a _very long_ post. Anyway, let the people decide :) _(I don't know if this poll works)_ Two posts: The same post: At least for now, we'll fill this post with teams of **THE FIRST WF** in Egypt, assuming that those are the qualified from Regionals **2021/2022**. (Trying to be more specific: the teams that qualified in the Regional held after the one that qualified to Dhaka) Please add a comment with your team information and I will add it to the post. Info preferre...

Full text and comments »

Teams going to ICPC WF 2023 (Egypt 2023, 2nd final) — WIP List Hi again! As we decided in [the other blog](https://mirror.codeforces.com/blog/entry/116946), let's have two differents lists, one per WF that will be held on Egypt. We'll fill this post with teams of **THE SECOND WF** in Egypt, assuming that those are the qualified from Regionals 2022/2023. Please add a comment with your team information and I will add it to the post. Info preferred: **{Handles on CF (otherwise, real name), Region, Country, University}** If you see some mistake on the teams, any kind of correction would be appreciated, also if you see here a team that belongs to the other post (or viceversa), let me know. </table> # Top 15 Over-All <table><thead><tr><th>Rank</th> <th>Country/Region</th><th>University</th> <th>Member1</th> <th>Member2</th> <th>Member3</th> <th>Rating</th></tr> </thead> <tr><td>1</td><td>Japan</td><td>&#129353; Tokyo Institute of Technology</td><td>[user:potato167,2024-05-01]</td><td>[user:tatyam,2024-05-01]</td><td>[user:noshi91,2024-05-...

Full text and comments »

Teams going to Gwalior/Pune Regionals **UPDATE:** I've uploaded the code that I used to generate this on Github, in case someone needs to generate something similar: [Codeforces Team Rating Calculator](https://github.com/abdullah768/Codeforces-Team-Rating-Calculator) The regional round has ended and here's the final Ranklist: https://www.codechef.com/public/rankings/ACM18GWR Inspired by the list of teams going to Kharagpur regionals, I decided to make one for Gwalior/Pune regionals. The list contains all the teams from the official Gwalior website. If you know the usernames of members of any of the teams. Please update the excel file: ### [HERE] (https://docs.google.com/spreadsheets/d/1jRvwzQzp1DOcazgI7jXBB8uY3u7Ze_eQ77Xa75_Q810/edit?usp=sharing) Team rating calculation has been done according to the official Codeforces team rating calculation formula. The table will be updated with details from the excel file every 6 hours or so. Last Updated: 10 pm, 12th December IST | No. | AIR | Team Name ...

Full text and comments »