Hello CodeForces Community,

I’d like to invite you to CodeChef December LunchTime at https://www.codechef.com/LTIME31.

Time: 27th December 2015 (1100 hrs) to 27th December 2015 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone

Details: https://www.codechef.com/LTIME31

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

• Problem Setter and Editorialist: CherryTree (Sergey Kulik)
• Problem Tester: shef_2318 (Pavel Sheftelevich)
• Contest Admin: PraveenDhinwa (Praveen Dhinwa) and pushkarmishra (Pushkar Mishra)
• Mandarin Translator: huzecong (Hu Zecong)
• Vietnamese Translator: VNOI Team
• Russian Translator: CherryTree (Sergey Kulik)
• Language Verifier: rarora7777 (Rahul Arora)

Prizes:

• Top 10 performers in Global and Indian category will win a cool CodeChef T-shirt. (For those who have not yet got their previous winning, please send an email to winners@codechef.com)

It promises to deliver on an interesting set of algorithmic problems with something for all.

Good Luck! Hope to see you participating!!

Hello CodeForces Community,

I’d like to invite you to CodeChef November LunchTime at https://www.codechef.com/LTIME30.

Time: 29th November 2015 (1100 hrs) to 29th November 2015 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

Details: https://www.codechef.com/LTIME30

• Problem Setter: amitp08 (Amit Pandey) and ma5termind (Sunny Aggarwal)
• Editorialist: Xsquare (Prateek Gupta)
• Russian Translator: CherryTree (Sergey Kulik)
• Problem Tester: pushkarmishra (Pushkar Mishra)
• Contest Admin: PraveenDhinwa (Praveen Dhinwa) and pushkarmishra (Pushkar Mishra)
• Mandarin Translator: huzecong (Hu Zecong)
• Vietnamese Translator: VNOI Team
• Language Verifier: rarora7777 (Rahul Arora)

Prizes:

• Top 10 performers in Global and Indian category will win a cool CodeChef T-shirt. (For those who have not yet got their previous winning, please send an email to winners@codechef.com)

It promises to deliver on an interesting set of algorithmic problems with something for all.

Good Luck! Hope to see you participating!!

Hello CodeForces Community,

I’d like to invite you to CodeChef September LunchTime at http://www.codechef.com/LTIME28.

Time: 27th September 2015 (1100 hrs) to 27th September 2015 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: https://www.codechef.com/LTIME28

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

• Problem Setter and Russian Translator: : CherryTree (Sergey Kulik)
• Editorialist: pkacprzak (Pawel Kacprzak)
• Problem Tester and Mandarin Translator:: BaconLi (Yanpei Liu)
• Contest Admin: PraveenDhinwa (Praveen Dhinwa) and pushkarmishra (Pushkar Mishra)
• Vietnamese Translator: VNOI Team
• Proof Reader: rarora7777 (Rahul Arora)

Prizes:

• Top 10 school students in Global and Indian category will win a cool CodeChef T-shirt. (For those who have not yet got their previous winning, please send an email to winners@codechef.com)

It promises to deliver on an interesting set of algorithmic problems with something for all.

Good Luck! Hope to see you participating!!

Hello Codeforces Community!

CodeChef invites you to participate in CodeChef August Long Challenge at http://www.codechef.com/AUG15. As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Time: 7th August 2015 (1500 hrs) to 17th August 2015 (1500 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: https://www.codechef.com/AUG15

Registration: Just need to have a CodeChef handle to participate. For all those, who are interested, are requested to register in order to participate.

• Problem Setters : maksym (Maksym Bevza) ma5termind (Sunny Aggarwal) Witalia (Vitalii Kozhukhivskyi), abhra73 (Abhra Dasgupta), totsamyzed (Vlad Mosko), mgch (Misha Chorniy), KaiZeR (Kirill Shchetinin), nssprogrammer (Snigdha Chandan) and Antoniuk (Vasia Antoniuk)
• Editorialist: kevinsogo (Kevin Atenzia)
• Problem Tester: LayCurse (Hiroto Sekido)
• Contest Admin: PraveenDhinwa (Praveen Dhinwa)
• Russian Translator : CherryTree (Sergey Kulik)
• Mandarin Translator: gediiiiiii (Gedi Zheng)
• Language Verifier: RahulArora Rahul Arora

Prizes:

For Indians:

1st prize: INR 12000

2nd prize: INR 8000

For Rest of the world:

1st prize: $400

2nd prize: $300

In addition to the above prizes. Top 10 global, Top 20 Indian, Top 5 school (Indian), Top 5 school (Global), Top 3 challenge problem solvers Indian and Global (apart from the winners) get cool CodeChef goodies. Starting with August Challenge 2015, top 5 girl coders will be provided with goodies, given that they are among top 100 in the final ranklist (this will be irrespective of the region).

It promises to deliver on an interesting set of algorithmic problems with something for all.

Good Luck! Hope to see you participating!!

Hello Codeforces Community!

CodeChef invites you to participate in CodeChef July LunchTime at http://www.codechef.com/LTIME26. The 3 hour contest with 4 scrumptious problems from shef_2318 (Pavel Sheftelevich) will add the needed punch of excitement to your Sunday morning. So, note down the details of the contest and make sure to be there.

Contest Details:

Time: 26th July 2015 (1100 hrs) to 26th July 2015 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Contest link: http://www.codechef.com/LTIME26

Registration: Just need to have a CodeChef handle to participate. For all those, who are interested, are requested to register in order to participate.

The problems have been tested by our new tester totsamyzed (Vlad Mosco), who makes his debut on CodeChef. Let’s give him a warm welcome. And for desert we will be having the elaborate and explanatory editorials from pkacprzak (Pawel Kacprzak). So, make sure to be there when the contest bell rings.

Prizes:

Top 10 performers in Global and Indian category will win a cool CodeChef T-shirt.

The contest promises to deliver on an interesting set of algorithmic problems with something for all. Good Luck! Hope to see you participating!!

Hello Codeforces Community!

CodeChef invites you to witness the CodeChef SnackDown 2015 Finale, which will have top 50 teams from across the global battling out for the title of "SnackDown 2015 Champions".

Time: 27th June 2015 (1200 hrs) to 27th June 2015 (1700 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/SNCK15FL

Registration: It is a team contest and the finalists are pre-registered for the contest.

• Problem Setters : CherryTree (Sergey Kulik) utkarshl (Utkarsh Lath) suh_ash2008 (Suhash Venkatesh), iscsi (Istvan Nagy) and PraveenDhinwa (Praveen Dhinwa)
• Editorialist: kevinsogo (Kevin Atenzia)
• Problem Tester: kevinsogo (Kevin Atenzia), utkarshl (Utkarsh Lath) suh_ash2008 (Suhash Venkatesh) and iscsi (Istvan Nagy)
• Contest Admin: PraveenDhinwa (Praveen Dhinwa)
• Russian Translator : CherryTree (Sergey Kulik)
• Mandarin Translator: gediiiiiii (Gedi Zheng)
• Vietnamese Translator: khanhptnk (Khanh Xuan Nguyen)

Prizes:

For Indians:

1st prize: INR 3 lakhs + Job Offer with Directi, 2nd prize: INR 2 lakhs + Job Offer with Directi, 3rd prize: INR 1 lakhs + Job Offer with Directi

For Rest of the world:

1st prize: Mac book pro to the team members, 2nd prize: Drone quadcopters to the team members, 3rd prize: Go pro cameras to the team members

It promises to deliver on an interesting set of algorithmic problems with something for all. Also, we bring all the action from the onsite round on your screens. You can watch all the action live here: https://www.youtube.com/watch?v=X_W2kOUrNbw starting from 4PM IST, 27th June (see your time zone here).

We are also conducting a parallel mirror contest of SnackDown Finale at: http://www.codechef.com/SD15FLMR.

Good Luck! Hope to see you participating!! Please don't forget to watch your favorite teams in action in onsite and online finals too !!

CodeChef invites you to participate in the CodeChef SnackDown 2015 Open Elimination Round, which is an open contest for those who could not proceed to the elimination round.

Time: 12th June 2015 (2300 hrs) to 13th June 2015 (0200 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/SD15ELOP

Registration: It is a team contest, so you need to register your teams first to take part in the contest. To register your team, login to your CodeChef account and go to: http://www.codechef.com/teams/register/SD15ELOP. If you don't have a CodeChef account, get one here. The registrations are open till the end of the contest.

• Problem Setters : Cherrytree (Sergey Kulik) sentinel45 (Ankit Srivastava) and iscsi (Istvan Nagy)
• Editorialist: kevinsogo (Kevin Atenzia)
• Problem Tester: kevinsogo (Kevin Atenzia) and gediiiiiii (Gedi Zheng)
• Contest Admin: I_lost_my_handle (Praveen Dhinwa)
• Russian Translator : Cherrytree (Sergey Kulik)
• Mandarin Translator: gediiiiiii (Gedi Zheng)
• Vietnamese Translator: khanhptnk (Khanh Xuan Nguyen)

It promises to deliver on an interesting set of algorithmic problems with something for all.

Good Luck! Hope to see you participating.

CodeChef invites you to participate in the CodeChef SnackDown Round 1C, which is final qualification round before proceeding to the elimination round.

Time: 7th June 2015 (2130 hrs) to 7th June 2015 (2330 hrs). (Indian Standard Time — +5:30 GMT) — Check out the local time in your City/Time Zone here.

Details: http://www.codechef.com/SNCK2015

Registration: It is a team contest, so you need to register your teams first to take part in the contest. To register your team, login to your CodeChef account and go to: http://snackdown.codechef.com/register. If you don't have a CodeChef account, get one here. Please note that the registrations closes one hour before the contest.

• Problem Setters : I_lost_my_handle (Praveen Dhinwa)and sentinel45 (Ankit Srivastava)
• Editorialist: kevinsogo (Kevin Atenzia)
• Problem Tester: kevinsogo (Kevin Atenzia) and Cherrytree (Sergey Kulik)
• Contest Admin: I_lost_my_handle (Praveen Dhinwa)
• Russian Translator : Cherrytree (Sergey Kulik)
• Mandarin Translator: gediiiiiii (Gedi Zheng)
• Vietnamese Translator: khanhptnk (Khanh Xuan Nguyen)

It promises to deliver on an interesting set of algorithmic problems with something for all.

Note: Participants who have qualified for elimination round are not allowed to take part in the Round 1C.

Good Luck! Hope to see you participating.

As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Continuing from there, we bring you the CodeChef June Challenge 2015 . The June 2015 Algorithm Challenge is taking place on http://www.codechef.com/JUNE15.

Here are the details:
Date: 5th June 2015 to 15th June 2015
Duration: 10 days
Problems: 9 binary problems of varying difficulty levels + 1 challenge problem.

Problem Setters:

• Amit Pandey (amitp08),
• Pavel Sheftelevich (shef_2318),
• Sergey Nagin (Sereja‎),
• Shchetinin Kirill (KaiZeR),
• Shiplu Hawlader (msh_shiplu),
• Vitalij Kozhukhivskij (Witalia),
• Vasia Antoniuk

Problem Testers:

• Sunny Aggarwal (ma5termind)
• Mahbubul Hasan (dragoon)

Editorialist:

• Balajiganapathi Senthilnathan (Balajiganapathi‎)

Mandarin Translator:

• Kojima Minako (xiaodao)

Russian Translator:

• Sergey Kulik (Cherrytree)

Contest Admin:

• Praveen Dhinwa (I_lost_my_handle)

It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.

The contest is open for all and those, who are interested, are requested to register in order to participate.

Check out the local time in your City/Time Zone here.

Good Luck! Hope to see you participating.

CodeChef invites all the programming enthusiasts to take part in the replay of ACM ICPC Kanpur onsite regionals 2014. The contest will have the problem set from the onsite round that determined the World Finalists to represent India from one of its three regional sites. You surely will enjoy cracking them.

It is an open contest and all you need is a CodeChef username to take part. If you do not have one, you may register here to participate.

Also, it is a team contest, so you need to register your teams first to take part in the contest. To register your team, register/login through CodeChef and go to: http://www.codechef.com/teams/register/KAN14ROS

Date of Contest: 2nd April 2015 Time: 19:00:00 hrs to 24:00:00 hrs IST Check out the local time in your City/Time Zone here.

We hope to see you all participating in the contest.

Good Luck!

CodeChef invites you to participate in the March Cook-off 2015 at http://www.codechef.com/COOK56/.

Time: 22nd March 2015 (2130 hrs) to 22nd March 2014 (2400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone here.

Details: http://www.codechef.com/COOK56/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

• Problem Setter: Vitaliy Herasymiv
• Problem Tester: Istvan Nagy
• Editorialist: Amit Pandey
• Contest Admin: Praveen Dhinwa
• Russian Translator: Sergey Kulik
• Mandarin Translator: Gedi Zheng

It promises to deliver on an interesting set of algorithmic problems with something for all. The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

CodeChef invites you to participate in the February Lunchtime at http://www.codechef.com/LTIME21/. This is an IOI style contest. This means that the problems will be partially graded. You will get score for passing certain test data.

Contest Details: 22nd February 2015, 11:00 hrs to 14:00 hrs. (Indian Standard Time — +5:30 GMT) — Check your timezone.

Contest Link: http://www.codechef.com/LTIME21/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

• Problem Setter & Russian Translator : Sergey Kulik
• Problem Tester : Roman Furko
• Editorialist: Balajiganapathi Senthilnathan
• Mandarin Translator: Minako Kojima
• Contest Admin: Praveen Dhinwa

It promises to deliver on an interesting set of algorithmic problems with something for all. The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

CodeChef invites all the programming enthusiasts to take part in the replay of the largest ACM ICPC' 2014 onsite rounds across the globe, the ACM-ICPC Amritapuri regionals. The contest will have the problem set from the onsite round that determined the World Finalists to represent India from one of its three regional sites. You surely will enjoy cracking them.`

It is an open contest and all you need is a CodeChef username to take part. If you do not have one, you may register here to participate.

Also, it is a team contest, so you need to register your teams first to take part in the contest. To register your team, register/login through CodeChef and go to: http://www.codechef.com/teams/register/AMR14ROS

Date of Contest: 14th January 2015 Time: 18:00:00 hrs to 23:00:00 hrs IST Check out the local time in your City/Time Zone here.

We hope to see you all participating in the contest.

Good Luck!

I invite you all to use the newly launched web IDE on CodeChef. It has some cool features:

• An advanced code editor along with syntax highlighting. Love ‘vi’ or ‘emacs’? You will love this as well.
• Autocompletion of code (It isn’t great for the new programmers out there, so for them an option to disable it in settings menu is present.)
• Execution for all the languages available on CodeChef (50+)
• More than 30 themes to choose from.
• Drag and drop a file and start editing. And download your code back in a file once you are done.
• Feel distracted with so many things on the browser? The full screen feature for you.
• Love saving your code templates? Do not need to carry it anywhere. Do it on the ide and that too a different one for each language.
• Well, last but not the least. Love keyboard shortcuts ? We have an surprise for you in settings menu.

Apart from these, one of the most important issue that we hope this will solve is the unintended cases of plagiarism. Yes this was the primary motivation for introducing this.

It has been long, that after each contest many of our users get blocked and their ratings get reduced due to the cheating cases. Most of the time, we have realised that the problem was of the code being left “Public”! So here is a big relief for all those – once you submit your code, it is destroyed as soon as you get your execution result! Yes we do not save your code anywhere. In case you want to save your code, just use the download button to have a copy in your desktop.

The way you may use it is:

• You need to be logged in to CodeChef to use it.
• Select a language of your choice from the drop down.
• Select your favourite Editor’s (default, vim, emacs) key bindings.
• Start writing your code in the template provided.
• Switch between the full screen mode to cut off the distraction.
• You may use the auto code completion feature or switch it off using the setting.
• Once you are done writing your code, you may download a copy.
• Click on the “Custom Input” check box to add your own input test data.
• Click on Run.

Use it, play around and do not forget to leave your feedback! We have fixed the bugs reported so far but there may be a few more, we will like to know if you face any.

We hope you participated and enjoyed the changes made to monthly Long Contests.

From now on, we will be having the problem statements available in Mandarin Chinese and Russian as well

As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Continuing from there, we bring you the CodeChef May Challenge 2014 . The May 2014 Algorithm Challenge is taking place on http://www.codechef.com/MAY14.

Here are the details:
Date: 2nd May 2014 to 12th May 2014
Duration: 10 days
Problems: 9 binary problems of varying difficulty levels + 1 challenge problem.

Problem Setters:

• Anudeep Nekkanti (anudeep2011),
• Bruno Oliviera (kuruma),
• Dmytro Berezin (Berezin‎),
• Roman Rubanenko (Rubanenko),
• Sergey Nagin (Sereja),
• Vitaliy Herasymiv (witua),
• Devendra Agrawal

Problem Testers:

• Sergey Kulik (xcwgf666)

Editorialist:

• Lalit Kundu (darkshadows‎)

Mandarin Translator:

• Kojima Minako (xiaodao)
• Gedi Zheng (stzgd)

Russian Translator:

• Gerald (Gerald)

It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.

The contest is open for all and those, who are interested, are requested to register in order to participate.

Check out the local time in your City/Time Zone here. Do share your feedback on what you feel about the new long contest format at feedback@codechef.com

Good Luck! Hope to see you participating.

CodeChef invites you to participate in the April Lunchtime 2014 at http://www.codechef.com/LTIME11. This is an IOI style contest. This means that the problems will be partially graded. You will get score for passing certain test data.

Time: 27th April 2014, 1100 hrs to 1400 hrs. (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/LTIME11/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

- Problem Setter : Piyush Kumar
- Problem Tester : Balajiganapathi
- Editorialist and Russian Translator : Sergey Kulik
- Mandarin Translator: Gedi Zheng & Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

CodeChef invites you to participate in the April Cook-off 2014 at http://www.codechef.com/COOK45.

Time: 20th April 2014 (2130 hrs) to 21st April 2014 (0000 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/COOK45/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

- Problem Setter : Vinayak Garg
- Problem Tester and Russian Translator : Gerald
- Editorialist: Constantin Sokol
- Mandarin Translator: Gedi Zheng & Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

We hope you participated and enjoyed the changes made to monthly Long Contests.

From now on, we will be having the problem statements available in Mandarin Chinese and Russian as well

As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Continuing from there, we bring you the CodeChef April 2014 Long Challenge. The April 2014 Algorithm Challenge is taking place on http://www.codechef.com/APRIL14.

Here are the details:
Date: 4th April 2014 to 14th April 2014
Duration: 10 days
Problems: 9 binary problems of varying difficulty levels + 1 challenge problem.

Problem Setters:

• Anudeep Nekkanti (anudeep2011),
• Bruno Oliviera (kuruma),
• Dmytro Berezin (Berezin‎),
• Gerald Agapov (gerald),
• Ilya Malinovsky (Malinovsky239),
• Lalit Kundu (darkshadows‎),
• Sergey Nagin (sereja),
• Shalini Sah (mischievous_me‎),
• Surya Kiran (adurysk‎),
• TianCheng Lou (ACRush),

Problem Testers:

• Mahbubul Hasan (dragoon‎)
• Shiplu Hawlader (msh_shiplu),

Editorialist:

• Lalit Kundu (darkshadows‎)

Mandarin Translator:

• Kojima Minako (xiaodao)
• Gedi Zheng (stzgd)

Russian Translator:

• Gerald (Gerald)

It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.

The contest is open for all and those, who are interested, are requested to register in order to participate.

Check out the local time in your City/Time Zone here. Do share your feedback on what you feel about the new long contest format at feedback@codechef.com

Good Luck! Hope to see you participating.

CodeChef invites you to participate in the March Lunchtime 2014 at http://www.codechef.com/LTIME10. This is an IOI style contest. This means that the problems will be partially graded. You will get score for passing certain test data.

Time: 30th March 2014, 1100 hrs to 1400 hrs. (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/LTIME10/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

- Problem Setter , Editorialist & Russian Translator: Sergey Kulik
- Problem Tester and Russian Translator : Roman Rubanenko
- Mandarin Translator: Gedi Zheng & Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

CodeChef invites you to participate in the March Cook-off 2014 at http://www.codechef.com/COOK44.

Time: 23rd March 2014 (2130 hrs) to 24th March 2014 (0000 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/COOK44/

Registration: Just need to have a CodeChef user id to participate.

New users please register here

- Problem Setter : Konstantin Sokol
- Problem Tester and Russian Translator : Gerald
- Editorialist: Tasnim Imran Sunny
- Mandarin Translator: Gedi Zheng & Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

We hope you participated and enjoyed the changes made to monthly Long Contests.

From now on, we will be having the problem statements available in Mandarin Chinese and Russian as well

As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Continuing from there, we bring you the CodeChef March 2014 Long Challenge. The March 2014 Algorithm Challenge is taking place on http://www.codechef.com/MARCH14.

Here are the details:
Date: 7th March 2014 to 17th March 2014
Duration: 10 days
Problems: 9 binary problems of varying difficulty levels + 1 challenge problem.

Problem Setters:

• Anudeep Nekkanti (anudeep2011?),
• Bruno Oliviera (kuruma),
• Dmytro Berezin (Berezin‎),
• Gerald Agapov (gerald),
• Konstantin Sokol (kostya_by),
• Sergey Nagin (sereja),
• Shiplu Hawlader (msh_shiplu),
• Tuan Anh (tuananh93),
• Vivek Hamirwasia (viv001‎)

Problem Tester:

• Mahbubul Hasan (dragoon‎)

Editorialist:

• ShangJingbo(shangjingbo)

Mandarin Translator:

• Kojima Minako (xiaodao)

Russian Translator:

• Gerald (Gerald)

It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.

The contest is open for all and those, who are interested, are requested to register in order to participate.

Check out the local time in your City/Time Zone here. Do share your feedback on what you feel about the new long contest format at feedback@codechef.com

Good Luck! Hope to see you participating.

We hope you participated and enjoyed the changes made to monthly Long Contests.

From now on, we will be having the problem statements available in Mandarin Chinese and Russian as well

As always, the long contests will start on first Friday of every month and last for 10 days. This ensures that two weekends are covered.

Continuing from there, we bring you the CodeChef February 2014 Long Challenge. The February 2014 Algorithm Challenge is taking place on http://www.codechef.com/FEB14.

Here are the details:
Date: 6th February 2014 to 16th February 2014
Duration: 10 days
Problems: 9 binary problems of varying difficulty levels + 1 challenge problem.

Problem Setters:

• Lalit Kundu (darkshadows?),
• Ivan Zdomsky (ballon),
• Sergey Nagin (sereja),
• Dmytro Berezin (berezin),
• Minako Kojima (xiaodao),
• Shiplu Hawlader (msh_shiplu)
• Roman Furko Furko),
• Vitaliy Herasymiv (witua) and
• Surya Kiran (adurysk?)

Problem Testers:

• Hiroto Sekido(laycurse)
• Gerald (Gerald)

Editorialist:

• Ajay Kumar Verma (djdolls)

Mandarin Translator:

• Kojima Minako (xiaodao)

Russian Translator:

• Gerald (Gerald)

It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.

The contest is open for all and those, who are interested, are requested to register in order to participate.

Check out the local time in your City/Time Zone here. Do share your feedback on what you feel about the new long contest format at feedback@codechef.com

Good Luck! Hope to see you participating.

CodeChef invites you to participate in the January Lunchtime 2013 at http://www.codechef.com/LTIME08.

LunchTime is a part of our new CodeChef For Schools initiative.

LunchTime is specially targeted towards the middle and high school students from across the globe. If you are in middle school or high school, this is what will whet your appetite. Sharpen your weapon of choice and get take the fight to go against the programmers from all over the globe. On you rides the pride of your school, carve its name atop the rank tables and attain immortality. You will be on your own against the 4 algorithmic problems of varying difficulty and numerous worthy foes from different part of the globe for 3 hours when you attend LunchTime.

And if you have passed high school, do not fret. You can still take part and show them your worth.

Time: 26th January 2014 (1100 hrs) to 26th January 2013 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Details: http://www.codechef.com/LTIME08/

Registration: Just need to have a CodeChef user id to participate. New users please register here

Problem Setter : Roman Furko
Problem Tester and Russian Translator Sergey Kulik
Editorialist: Praveen Vaka
Mandarin Translator: Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

CodeChef invites you to participate in the January Cook-off 2014 at http://www.codechef.com/COOK42.

Time : 19th January 2014 (2130 hrs) to 20th January 2014 (0000 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.
Details : http://www.codechef.com/COOK42/

Registration: Just need to have a CodeChef user id to participate.

New users please register here.

• Problem Setter : Abdullah Al Mahmud
• Problem Tester & Russian Translator : Gerald
• Editorialist : Praveen Reddy Vaka
• Mandarin Translator : Minako Kojima

It promises to deliver on an interesting set of algorithmic problems with something for all.
The contest is open for all and those, who are interested, are requested to have a CodeChef userid, in order to participate.

New Year Greetings Everyone !!!

We cordially invite you all to the first CodeChef long challenge of the year 2014. The contest promises to deliver on an interesting set of algorithmic problems with prizes up for grabs. The contest is open for all and those, who are interested, just need are a CodeChef username to participate. Those who do not have a CodeChef username are requested to register in order to participate.

The problem statements of the contest will also be available in Mandarin Chinese and Russian as well.

Spanning over two weekends, starting from the first Friday of every month, our monthly long challenges promise to whet your programming appetite, with 9 binary problems of varying difficulty levels & 1 challenge problem.

The January Challenge 2014 is taking place on http://www.codechef.com/JAN14.

The contest details are as follows:

Start Date: Friday, 3rd January, 2014 3:00 PM (IST)
End Date: Monday, 13rd January 2014 3:00 PM (IST)
Contest Duration: 10 days

Problem Setters:

• David Stolp (pieguy),
• Kaushik Iska (cauchyk),
• Konstantin Sokol (kostya_by),
• Mugurel Ionut Andreica (mugurelionut),
• Nikhil Garg (Nikhil),
• Roman Rubanenko (rubanenko),
• Sergey Nagin (sereja),
• Tuan Anh (tuananh93),
• Vivek Hamirwasia (viv001)

Problem Testers:

• Mahbub (dragoon),
• Gerald (Gerald)

Editorialist: ShangJIngbo (shangjingbo)

Mandarin Translator: Kojima Minako (xiaodao)

Russian Translators: Sergey Kulik (cherrytree)

Check out the local time in your City/Time Zone here.

Do share your feedback on what you feel about the new long contest format at feedback@codechef.com

Good Luck! Hope to see you participating.