We invite you to participate in CodeChef’s Starters 206, this Wednesday, 1st October, rated for 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin: Shreyan Dominater069 Ray

• Statement Verifier and Tester: Sushil SmolBrain Raaja

• Setter: Shreyan Dominater069 Ray

• Text Editorialist: Nishank IceKnight1093 Suresh

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 204, this Wednesday, 17th September, rated for 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier: Shreyan Dominater069 Ray

• Tester: Sushil SmolBrain Raaja

• Setter: Shreyan Dominater069 Ray, Sushil SmolBrain Raaja, Proof_by_QED

• Text Editorialist: Nishank IceKnight1093 Suresh

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 203, this Wednesday, 10th September, rated for 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin: Shreyan Dominater069 Ray

• Tester and Statement Verifier: Sushil SmolBrain Raaja

• Setter: Nishank IceKnight1093 Suresh, Shreyan Dominater069 Ray

• Text Editorialist: Nishank IceKnight1093 Suresh

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 200, this Wednesday,20th August, rated for all.

Time: 8:00 PM — 11:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin : Shreyan Dominater069 Ray.

• Editorialist : Nishank IceKnight1093 Suresh.

• Tester : Sushil SmolBrain Raaja.

• Setters: MathModel, chromate00, Proof_by_QED, BurnedChicken, Dominater069

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Congratulations to Top 5 in Div1!

• Rank $$$1$$$ : potato167

• Rank $$$2$$$ : Nachia

• Rank $$$3$$$ : shiomusubi496

• Rank $$$4$$$ : TKT_YI

• Rank $$$5$$$ : hos.lyric

We invite you to participate in CodeChef’s Starters 199, this Wednesday,13th August, rated for 5 star (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier : Shreyan Dominater069 Ray.

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray, Proof_by_QED

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 197, this Wednesday, 30th July, rated for 6 stars (i.e. for users with rating < 2500).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier : Shreyan Dominater069 Ray.

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 195, this Wednesday, 16th July, rated for 5 star (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier : Shreyan Dominater069 Ray

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray, Nishank IceKnight1093 Suresh, Proof_by_QED.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Please note the unusual day of the week for the contest.

We invite you to participate in CodeChef’s Starters 194, this Sunday, 13th July, rated for all.

Time: 8:00 PM — 11:00 PM IST

Joining us on the problem setting panel are:

• Setters: Dominater069, DarkSparkle, jtnydv25, ExplodingFreeze.

• Contest Admin: Shreyan Dominater069 Ray

• Text Editorialist: Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Note:

• The contest is on a Sunday instead of the usual Wednesday, due to it being a more convenient time for some users. Only the rated for all contests may be held on Sundays instead (but upto the discretion of contest admin), the other contests on the usual Wednesday.

• The contest is yet again based off the IOITC Camp in India. If you have participated there or seen the problems otherwise, please refrain from participating.

• There may be a number of unusual problems, or problems with subtasks.

Good Luck!

Congratulations to Top $$$5$$$ in Division $$$1$$$.

• Rank $$$1$$$ : Nachia

• Rank $$$2$$$ : 244mhq

• Rank $$$3$$$ : kotatsugame

• Rank $$$4$$$ : potato167

• Rank $$$5$$$ : yydtq

We invite you to participate in CodeChef’s Starters 193, this Wednesday, 2nd July, rated for all users.

Time: 8:00 PM — 10:30 PM IST

Joining us on the problem setting panel are:

• Setters: Dominater069, IceKnight1093, sheercold and Codula

• Admin: Dominater069

• Tester: SmolBrain

• Editorialist: IceKnight1093

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Note: The problems are based off the Indian IOI Training Camp 2025. As such, there might be more unusual problems, and more subtasks. If you have participated in the camp, or know the problems in some other way, please do not participate.

Congratulations to Top 5 in Div1!

• Rank $$$1$$$ : jeroenodb
• Rank $$$2$$$ : EnofTaiPeople
• Rank $$$3$$$ : Nachia
• Rank $$$4$$$ : kotatsugame
• Rank $$$5$$$ : PCTprobability

We invite you to participate in CodeChef’s Starters 191, this Wednesday, 18th June, rated for 6 stars (i.e. for users with rating < 2500).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin: Shreyan Dominater069 Ray

• Statement Verifier and Tester: Sushil SmolBrain Raaja.

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Setters: Shreyan Dominater069 Ray, Sushil SmolBrain Raaja.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

We invite you to participate in CodeChef’s Starters 189, this Wednesday, 4th June, rated for 5 star (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier: Shreyan Dominater069 Ray

• Text Editorialist: Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray, beaten_by_ai.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Congratulations to Top $$$5$$$ in Div $$$1$$$:

• Rank $$$1$$$ : potato167

• Rank $$$2$$$ : TKT_YI

• Rank $$$3$$$ : hint908

• Rank $$$4$$$ : Kude

• Rank $$$5$$$ : Daylight_pro

We invite you to participate in CodeChef’s Starters 188, this Wednesday, 28th May, rated for 6 stars (i.e. for users with rating < 2500).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier: Shreyan Dominater069 Ray

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray, Matthew chromate00 Roh.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Congratulations to Top $$$5$$$ in Div $$$1$$$:

• Rank $$$1$$$ : potato167
• Rank $$$2$$$ : flytime
• Rank $$$3$$$ : owll
• Rank $$$4$$$ : loki_x
• Rank $$$5$$$ : Nachia

We invite you to participate in CodeChef’s Starters 186, this Wednesday, 14th May, rated for 6 stars (i.e. for users with rating < 2500).

Time: 8:00 PM — 10:30 PM IST

Joining us on the problem setting panel are:

• Contest Admin , Statement Verifier: Shreyan Dominater069 Ray.

• Text Editorialist : Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: chromate00, Shreyan Dominater069 Ray, BitWizz.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Here is the breakup of problems division wise:

• Division $$$1$$$ : $$$6$$$ problems.
• Division $$$2$$$ : $$$6$$$ problems.
• Division $$$3$$$ : $$$7$$$ problems.
• Division $$$4$$$ : $$$8$$$ problems.

Congratulations to the Top $$$5$$$ in Division $$$1$$$:

• Rank $$$1$$$ : potato167
• Rank $$$2$$$ : Nachia
• Rank $$$3$$$ : TKT_YI
• Rank $$$4$$$ : Kude
• Rank $$$5$$$ : liympanda

We invite you to participate in CodeChef’s Starters 184, this Wednesday, 30th April, rated for 5 stars.

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin : Shreyan Dominater069 Ray.

• Text Editorialist: Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters: Shreyan Dominater069 Ray.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Hope you enjoyed the contest. Congratulations to Top 5 in Div1!

• Rank $$$1$$$ : potato167 (sub-30 minute AK!)
• Rank $$$2$$$ : arvindf232
• Rank $$$3$$$ : Kude
• Rank $$$4$$$ : noya2
• Rank $$$5$$$ : harurun4635

We invite you to participate in CodeChef’s Starters 183, this Wednesday, 23th April, rated for 6 stars.

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Author : Shreyan Dominater069 Ray.

• Tester: Archit Pols_Agyi_Pols Kumar.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

IOI Bootcamp: Newton School of Technology (NST)

Are you a school student passionate about competitive programming? Join us for an intensive 13-day IOI training camp designed to nurture India’s future programming champions.

Why Join?

Get exposure to university-level CS knowledge while still in school Develop algorithmic thinking skills that extend beyond programming Get trained by top competitive programmers from around the world Experience real-world contest settings Become part of India’s top CP community

Dates: May 25 — June 6th, 2025

Location: NST-Rishihood Campus, Delhi

Apply Here

Hope you enjoyed the contest. The problems turned out slightly harder than intended.

Congratulations to top 5 on Div $$$1$$$:

• Rank $$$1$$$ : potato167
• Rank $$$2$$$ : maspy
• Rank $$$3$$$ : liympanda
• Rank $$$4$$$ : catgirl
• Rank $$$5$$$ : kuhqku

Recently, the account of Jaskaran Singh — s_jaskaran_s was hacked by someone. The hacker changed the password and email address of the account and he is not able to recover it. He got to know when someone asked him if he was selling his account. He was told that someone on Telegram was selling his account.

MikeMirzayanov Can you please help him in recovering his account so that it isn't wrongly used by other people?

UPD : The account has been recovered with the help of one of the sellers.

We invite you to participate in CodeChef’s Starters 181, this Wednesday, 9th April, rated for all.

Time: 8:00 PM — 10:30 PM IST

Joining us on the problem setting panel are:

• Contest Admin : Satyam satyam343, Shreyan Dominater069 Ray.

• Statement Verifier : Shreyan Dominater069 Ray.

• Text Editorialist :Nishank IceKnight1093 Suresh.

• Tester:Sushil SmolBrain Raaja.

• Setters: satyam343, wuhudsm, Think_Only_Once, sai-17.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

UPD : Here are the number of problems in each Division:

• Division $$$1$$$ : $$$6$$$ problems (and $$$2$$$ subtasks)
• Division $$$2$$$ : $$$6$$$ problems (and $$$1$$$ subtask)
• Division $$$3$$$ : $$$7$$$ problems (and $$$1$$$ subtask)
• Division $$$4$$$ : $$$8$$$ problems (and $$$1$$$ subtask)

Congratulations to Top 5!

• Rank $$$1$$$ : kotatsugame
• Rank $$$2$$$ : TKT_YI
• Rank $$$3$$$ : Rubikun
• Rank $$$4$$$ : potato167
• Rank $$$5$$$ : Nachia

We invite you to participate in CodeChef’s Starters 177, this Wednesday, 12th March, rated upto 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier :Shreyan Dominater069 Ray.

• Text Editorialist — Nishank IceKnight1093 Suresh.

• Tester: Sushil SmolBrain Raaja.

• Setters:Shreyan Dominater069 Ray, beaten_by_ai.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

UPD : The number of problems in each division is as follows:

• Division $$$1$$$ : $$$6$$$ problems
• Division $$$2$$$ : $$$7$$$ problems
• Division $$$3$$$ & $$$4$$$ : $$$8$$$ problems

UPD 2 : Congratulations to the winners:

• Rank $$$1$$$ : liympanda
• Rank $$$2$$$ : harurun4635
• Rank $$$3$$$ : GOTKAKO
• Rank $$$4$$$ : noya2
• Rank $$$5$$$ : Kude

Hi everyone,

The ICPC Asia West Finals onsite round will be held tomorrow across several different locations.

We plan to host a stream covering the round. The stream link will be posted shortly. The problems will be posted in this blog when the contest starts. The editorial will be posted after the contest ends.

Contest Details

• Public ranklist Link — Ranklist
• Date & Time — 8th March 2025, Saturday, 10:00 IST (Tentative start time)
• Problem statements — NA
• Stream Links — AryanC Channel, Codechef Channel, AryanC Twitch

Hope you enjoy the contest! May the best teams win.

UPD 1 : The problem statements have been posted.

After a long wait, jeroenodb finally deservingly reached LGM. Many congratulations to him.

Previously, he had reached 2999 rating. Fortunately, this time he actually crossed the barrier.

We invite you to participate in CodeChef’s Starters 167, this Wednesday, 1st January, rated upto 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier: Shreyan Dominater069 Ray

• Text Editorialists: Nishank IceKnight1093 Suresh

• Tester: Sushil SmolBrain Raaja

• Setters: Chromate chromate00, Shreyan Dominater069 Ray, Sushil SmolBrain Raaja, Think_Only_Once.

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Hi everyone,

The second Indian ICPC Amritapuri onsite regional round will be held tomorrow in Bengaluru, Coimbatore and Kollam.

We plan to host a stream covering the round. The stream links will be posted shortly. The problems will be posted in this blog when the contest starts. The editorial will be posted after the contest ends.

Hope you enjoy the contest!

Contest Details

• Public ranklist Link — ICPC Amrita Website
• Date & Time — 29 December 2024, Sunday, 9:00 IST (Tentative start time)
• Duration — 5 Hours
• There will be 8 to 20 problems to solve
• Problem statements : NA
• Will follow standard ICPC scoring system (20 minutes penalty and 1 point per problem)
• The questions may not be sorted by difficulty
• Stream link — Codechef Channel AryanC Channel
• Mirror streams on — CodeChef and aryanc403 channel

UPD : The stream has started and the problem statements have been released. na

UPD 2 : The editorial has been uploaded in the same google drive as above.

UPD 3 : I also forgot to the post the ranklist. It can be found on ICPC Amrita Website. Congratulations to the Top 3 teams!

• Rank 1 : Ice Shard, CMI (10/12) : sheercold, Sid0309, Codula
• Rank 2 : on_the_spectrum, IITD (10/12) : MridulAhi, BladeRunner, etherinmatic
• Rank 3 : 404_solution_not_found, IITI (9/12) : nishkarsh, sai-17, P.V.Sekhar

UPD 4 : The jury solutions are also now available on the drive.

Hi everyone!

The first Indian ICPC onsite regional round was held today in Kanpur. I hope all of you enjoyed the contest. The results have been published at ICPC Kanpur Website.

The problems were authored by satyam343, chromate00 and me. We hope you enjoyed the problemset. You can find the problemset, editorial and jury solutions at NA.

Any feedback, positive or negative, about it would be most welcome.

Congratulations to Top 3 :

1. SubtasksWhere (IIITH), 11 / 12 — shiven, SmolBrain and hariaakash646.
2. poocha kya (IIT BHU), 10 / 12 — sv1shan, _helloLad and Atekichan.
3. segment_trACk (IITK), 10 / 12 — yuvrajKharayat, Ryshi and Sanat.

Hi everyone,

We are looking for tasks for the $$$3$$$ Indian Regionals and mainly, for the Asia West Finals. If you or anyone you know is interested, please fill this form

Dates of the Contests

• Kanpur Regional : 24th December. We will accept proposals till 16th December.
• Amritapuri Regional : 29th December. We will accept proposals till 20th December.
• Chennai Regional : 4th January. We will accept proposals till 25th December.
• Asia West Finals : sometime in March. We will accept proposals till 15th February.

Eligiblity

• You must not be a participant of the aforementioned regionals and Asia West finals
• You should have a max rating of at least $$$1800$$$ on Codeforces. (Special cases can be considered for this)

Compensation

Problem setters will be paid according to the following per-problem rates :

• Cakewalk (800 — 1000) : 800 INR
• Simple (1100 — 1300) : 1500 INR
• Easy (1400 — 1700) : 3000 INR
• Easy-Medium (1800 — 2100) : 5000 INR
• Medium (2200 — 2400) : 8000 INR
• Medium-Hard (2500 — 2800) : 12000 INR
• Hard (2900+) : 17000 INR

The ratings in the brackets are approximate Codeforces difficulties. Ultimately, the difficulty will be decided by the contest admin. We are mainly looking for the harder problems in the last $$$3 - 4$$$ categories.

If you are not free to prepare your problem, the preparation cost will be split 50 — 50 between the preparer and the author.

We invite you to participate in CodeChef’s Starters 162, this Wednesday, 27th November, rated upto 5 stars (i.e. for users with rating < 2200).

Time: 8:00 PM — 10:00 PM IST

Joining us on the problem setting panel are:

• Contest Admin and Statement Verifier: Shreyan Dominater069 Ray

• Text Editorialists: Nishank IceKnight1093 Suresh

• Tester: Sushil SmolBrain Raaja

• Setters: Shreyan Dominater069 Ray, Sushil SmolBrain Raaja, Matthew chromate00 Roh

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here. Hope to see you participating.

Good Luck!

Problem Distribution :

• Div1 : 5 problems
• Div2 : 6 problems
• Div3 : 7 problems
• Div4 : 8 problems

Congratulations to the Top 5!

Ranking :

• 1st : kdu_5
• 2nd : Egor
• 3rd : Kude
• 4th : physics0523
• 5th : wwwwodddd