Hi,

I happy that I see many contests in the CF calendar. Div $$$2$$$ rounds are good training for me, as I need some time for solving last two tasks in such contests (many times I am not able to solve all tasks and need editorial for some).

But, I really do not see reason why we have so small amount of $$$D1$$$ rounds? I am pretty sure the tasks from two $$$D2$$$ only rounds can be merged to get one combined round in many cases. Remaining easier tasks can be used for some $$$D3$$$ or $$$D4$$$ contests. So I am pretty sure that from current $$$4$$$ $$$D2$$$ rounds we can get at least $$$3$$$ rounds ($$$D1$$$ + $$$D2$$$ + $$$D3$$$).

Again this is not complain, as I am happy when someone gives me opportunity to solve new problems. Only I think that CF should start with merging tasks from different authors and allow submiting only one task (support paying by task not by contest). Many coders have $$$1-2$$$ cool ideas and they are not able to set whole round. Normally if someone has all tasks for $$$D1$$$ round there is no reason for merging. if someone has only $$$D2$$$ or $$$D3$$$ problemset and he won't separate tasks, it is ok too, but such setters should have lower priority for their rounds.

I believe all this stuffs will increase quality of CodeForces rounds and make better rating distribution.

I am interested in your opinion and maybe see reasons why this system is not supported by CF currently (maybe I am missing some obvious reason).

Hi,

GP of Serbia is organized today as regular Opencup round. Contest is prepared for ByteDance camp and first took part at May 3rd. Our ICPC team, RAF Penguins, chose some tasks from previous national competitions in Serbia. We would like to mention setters of the tasks:

Pajaraja : H

milisav: C, D

ivan100sic :B, G, J

dd__ : I

Ramsey: F, K, L

allllekssssa: A, E

Thanks for participation!

Hello Codeforces community!

I would like to announce Algoge Round 4. The contest will be held on Sunday 10th May at 15:00 UTC.

Algoge is site created by students of the Faculty of Computer Science during quarantine days in Serbia, based on the DMOJ platform. As there are no onsite contests these days, we decided to organize $$$5$$$ online rounds mainly for participants from Balkan. In the first three rounds, the tasks were only available on Serbian. Easier tasks were prepared by us and harder ones were taken from Moscow Workshop competitions. We had between 50 and 150 participants per round.

This is the first round fully created by us. For that purpose we decide to translate the tasks into English (Serbian version will be available too) and invite all of you to compete. Round will have $$$5$$$ or $$$6$$$ tasks and lasts $$$3$$$ hours. Tasks will be slightly harder than usual CF Div 2 round.

All task are prepared by ICPC team RAF Penguins: Pajaraja, milisav and allllekssssa.

Also I would like to thank DuX and all other students from my faculty for maintenance the platform.

As some labels on the site are in Serbian, everything that you need to know for doing contest is the following:

After registration on the site you need this link for the round (currently round is in upcoming part). In the moment when round starts you can join — there is no extra registration for the round. English statements will be in a visible place.

See you on Sunday!

UPD 1: Scoring for the round: $$$30 - 50 - 70 - 80 - 120 - 140$$$

English versions of statements will be at the top of each problem. As I didn't mention before, scoring system is same as AtCoder system with full feedback, only you are getting $$$10$$$ minutes for wrong submission.

UPD 1: Contest starts in $$$30$$$ minutes.

Greetings Codeforces community! CodeChef’s March Lunchtime 2019 sponsored by ShareChat begins soon so gear up for this exciting short contest with 5 new problems. This is your last chance to reach for the bonus prizes that CodeChef has been giving out all through their birthday month.

ShareChat — India’s fastest growing social network is seeking both interns and full-time employees to join their dynamic team. Job opportunities are open to programmers across the world and internship opportunities are exclusively aimed at final year B.Tech students who have already been placed and looking forward to gaining startup experience. Don’t forget that you must participate in the contest to be eligible for internships and full-time jobs. Visit the contest page for more details.

I hope you will join your fellow programmers and enjoy the contest problems. Joining me on the problem setting panel are:

• Setters: kingofnumbers (Hasan Jaddouh), Erfan.aa (Erfan Alimohammadi), allllekssssa (Aleksa Plavsic)

• Admin: kingofnumbers (Hasan Jaddouh)

• Tester: allllekssssa (Aleksa Plavsic)

• Editorialist: taran_1407 (Taranpreet Singh)

• Statement Verifier: Xellos (Jakub Safin)

• Mandarin Translator: huzecong (Hu Zecong)

• Vietnamese Translator: Team VNOI

• Russian Translator: Mediocrity (Fedor Korobeinikov)

• Bengali Translator: solaimanope (Mohammad Solaiman)

• Hindi Translator: Akash Shrivastava

Contest Details:

• Start Date & Time: 30th March 2019 (1930 hrs) to 30th March 2019 (2230 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone
• Contest link: https://www.codechef.com/LTIME70
• 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.
• Prizes: Top 20 Indian and top 20 Global school students from ranklist will receive certificates and CodeChef laddus, with which they can claim cool CodeChef goodies. Know more about the laddus here: https://www.codechef.com/laddu. As CodeChef is celebrating 10 years of cooking, there are additional prizes up for grabs. Know more about it here: https://www.codechef.com/laddu. (For those who have not yet got their previous winning, please send an email to winners@codechef.com)

At the end I want to thank my friend milisav for helping me in preparation my tasks, without him everything would be much harder.

Good Luck!
Hope to see you participating!!
Happy Programming!!

Hello,

Grand Prix has just finished!

Can anyone tell us solution for problems F and M? Can you tell me proof for solution of problem J?

Hi all,

I couldn't do contest today, I spent my last four days to prepare this animation in Blender-university project. Man, I felt real pain and at the end I made nothing. Do you know someone with less talent for 3D modeling and animations? What are the four most useless days that you spent in your life?

Sorry for this unrelated blog, but I had to share this little piece of art with someone.

P.S. I forgot to mention the most important thing, The left flag was Codeforces flag, but it was disappear during rendering process.

Hi all,

Tomorrow is the first round of OpenCup, Grand Prix of Zheijang. My university got accounts for competitions, and we are planning to take part. I only have one question: Where I can find link for tomorrow round?

Thanks in advance!

Hello CodeForces Community!

We are back with another set of brain racking problems this August Lunchtime 2018, a three-hour test to knack your coding abilities. There are more reasons to be delighted as ShareChat has opened some exciting job opportunities for professionals across the globe! More details can be found on the August Lunchtime contest page.

This time on the problem setting panel are:

• Problem Setter: kingofnumbers (Hasan Jaddouh), allllekssssa (Aleksa Plavsic)
• Problem Tester and Editorialist: Pepe.Chess (Hussain Kara Fallah)
• Statement Verifier: Xellos (Jakub Safin)
• Russian Translator: Mediocrity (Fedor Korobeinikov)
• Mandarin Translator: huzecong (Hu Zecong)
• Hindi Translator: Srijan Dubey
• Vietnamese Translator: VNOI Team

Contest Details:

Time: 25th August 2018 (1930 hrs — 2230 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Contest link: https://www.codechef.com/LTIME63

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.

Prizes: Top 10 performers in Global and Indian category will get CodeChef laddus, with which the winners can claim cool CodeChef goodies. Know more here: https://discuss.codechef.com/questions/51999/how-do-i-win-a-codechef-goodie. (For those who have not yet received their previous winning, please send an email to winners@codechef.com)

Good Luck!

Hope to see you at the contest!

UPD He did it again! uwi solved everything in last minutes and got the first place! Congratulations!

TOP 5:

uwi

Um_nik

KrK

Mrip

step_by_step

Big congratulation to winner of div 2 round receed.

Thanks for participation!

Hello CodeForces Community!

We’re happy to invite you to the August Cook-Off 2018 sponsored by ShareChat. And there are more reasons to cheer as there are some exciting full-time job opportunities by ShareChat for professionals across the globe. More details can be found on the August Cook-Off contest page.

Looking forward to seeing your participation in the August Cook-Off 2018! This time on the problem setting panel are:

• Problem Setter: allllekssssa (Aleksa Plavsic)
• Problem Tester: Pepe.Chess (Hussain Kara Fallah)
• Editorialist: taran_1407 (Taranpreet Singh)
• Statement Verifier: Xellos (Jakub Safin)
• Russian Translator: Mediocrity (Fedor Korobeinikov)
• Mandarin Translator: huzecong (Hu Zecong)
• Vietnamese Translator: (VNOI Team)

Contest Details:

Time: 19th August 2018 (2130 hrs) to 20th August 2018 (0000 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone

Contest link: https://www.codechef.com/COOK97

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.

Prizes: Top 10 performers in Global and Indian category will get CodeChef laddus, with which the winners can claim cool CodeChef goodies. Know more here: https://discuss.codechef.com/questions/51999/how-do-i-win-a-codechef-goodie
(For those who have not yet got their previous winning, please send an email to winners@codechef.com)

Good Luck!
Hope to see you participating!!
Happy Programming!!

UPDATE:

BAM BAM BAM HE DID IT, HE DID IT !!!! We have a winner ! uwi solved all five tasks and took the first place. Congratulations !

TOP 5:

uwi

tourist

LHiC

nuip

zeliboba

Congratulation to div 2 winner TadijaSebez — Serbia is proud of you !

Thanks all for participation ! You made this contest amazing !

Guys you made mistake again ! It becomes reality of Codeforces rounds. It is sad...

But this blog is not criticism and I won't blame your work!

I only want to say that I appreciate your effort to prepare rounds and I am always happy when I see new CF contest in calendar. So continue with work! I will be better and more careful in future contests after this mistake and hope same from your side !

At the end I suggest idea for finding one more coordinator — two heads think better than one !

Good luck and hope to see many new competitions !

Hi,

I was doing previous div 1 round and I got WA on the second task ( 33rd testcase). I wasn't able to understand why I got Wrong Answer, so I asked question on contest blog and had a few answers. They were very helpful, but still I do not understand whole sotry about my mistake and some different outputs of my program ( all programs looks same for me ).

1. Contest submission 25046285

2. First submission after contest 25087377 (only added getchar(), immediately after cin )

3. Second submission after contest 25087412 (I changed place of getchar(), and wrote it one line above)

I understood why I needed to add one extra getline(), but I do not understand why getchar() is needed and why second and third submissions gives different verdicts.

I will be grateful for any help :)

Two weeks before next CF round :( MikeMirzayanov, we are waiting suprise from you :P

Hello,

Today I see two interesting contests — HackerRank 101 Hack and CodeChef Cook-off. Usually I am trying to do both, but now I must decide for one (like all other contestants). We have a lot of conflicts in Coders Calendar, a lot of interesting contests are on the same day and many times like this one they are at the same time! I think that shouldn't happen, month has 30 days and we have at least two times less important contests of big sites.

For me, priority should have the following rounds :

Codeforces: Div 1 and Div 2 rounds — we around 6 rounds per month

HackerRank: 101 Hack, HourRank — 2 contests

TopCoder: SRM matches — 3 per month ( I think we don't have more this rounds, but I don't participe in it ).

Codechef: Cook-off, Lunchtime — 2 contests

HackerEarth: Easy contest — 1 per month

I didn't mention longer contests, because clashing isn't important for them. Everyone has long window for showing its skills.

In total we have 14 short important rounds per month, and we have around 9 free days (weekends : Saturday and Sunday). And we can not forget Fridays afternoon, many rounds can be held then. So why administrators of this sites don't make deal about distributions and dates for all this contest one month before ? I think that is possible and distribution can be very good for everyone. For example :

• 3 weekend CF rounds

• 2 HR weekend rounds

• 2 Topcoder weekend round

• 1 Codechef weekend round

• 1 HackerEarth weekend round

Maybe another solution is organizing more contests at the weekends but starting time for some rounds can be good for Eastern countries ( like HourRank 3 or many TC contests).

I would like to hear your opinion about this idea, whether it is possible and acceptably for you?

Especially I glad to hear opinion of administrators of this sites, I talked with many of them before, but we didn't disscuss about this topic.

Regards.

Hello Codeforces community!

I'd like to announce the fourth HackerRank HourRank round! The contest will be held on Sunday, 3th January 2016. You can sign up for the contest here. Top 10 winners on the leaderboard will receive a HackerRank T-Shirt.

Problems have been set by Shafaet Ashraf (Shafaet) and Aleksa Plavsic (allllekssssa). Competitors will have 1 hour for solving 4 problems with variable scoring distribution. Contest are rated for all HackerRank users. We want to thank HackerRank team, especially to [user:wanbo,2015-12-30 ] for testing and great advices and svanidz1 for helping.

If you have any question be free to ask.

The whole HackerRank team wish you good New Year with great success both in private life and numerous programming contests!

See you on Sunday :)

UPD: Score distribution: 20 — 40 — 60 — 80

UPD1: 45 minutes before contest.

UPD2: 15 minutes before the contest. Are you ready to become new HourRank winner, or maybe some previous winner will win this contest? :)

UPD3: Congratulations to winners!

1.xiaowuc1

2.I_love_Tanya_Romanova

3.__math

4.BigBag

5.Sumeet_Varma

I hope you enjoyed in problems! We are glad to hear your comments and suggestions for this and future contest.

Thank you again for participation :)

UPD4: Editorial is published !

Hi :)

After some time, I decided to write again one unimportant blog (I must practice for final English exam and I am worry that next 4 months aren't enough to change my 'potato' Englsih to something normal :D).

This year haven't finished yet, but I am pretty sure it will be one great year(my rating is smaller than before 11 months, but I am better programmer for 50%). I participed on some national contests, it was great experience for me, I met some great guys and I hope we will compete again next year :) Also I won two Codechef t-shirts, I haven't received it yet, but I beleive that I will wear them once. The main things this year were my mark from prologue (yey I get 4, after 2 this is amazing — anyway did you hear for that programming language ? — I must learn it o_O). The second great thing in my programming life was preparation of several contests. I must tell again that I organized :

-Codeforces 307 div 2 round

-HackerRank 101 Hack August

-HackerRank HourRank1

The first two rounds I prepared with my friend Nikola and the last I prepared alone, but great HR team helped me a lot. At least I hope you see the problems and you find something good for you... I don't plan to organize anything till the end of the year, but ceartainly you will find more problems with GukiZ in future :) Yes, my best teacher retired, but we meet each Saturday with new ideas and problems. I don't write more about this contests and personal life, but if you have any advice how I can improve my programming and setting skills, plese write it. I really like to hear that.

Don't worry I will finish soon, I suppose you can not read more my perfect English :)

In this blog I wanted to provide my help for preparation any contest in future. If you have tasks and you need revision, any suggestion or opinion, I am glad to help. Also we can prepare something together if you have idea or desire to work with me. You can be sure that I won't use your ideas and task somewhere without you and I won't share it with anyone :)

If you aren't interested for anything before you can share with me your favourite contest, maybe it will be interesting to me and many other CF users for practicing.

Now I am going to eat pizza :)

Bye!

Hello Codeforces community !

I am glad to announce the first HackerRank HourRank round! The contest will be held on 15th October 2015 at 15:00 UTC. You can sign up for the contest here. Top 10 winners on the leaderboard will receive a HackerRank T-Shirt.

Problems have been set by Shafaet Ashraf (Shafaet) and Aleksa Plavsic (allllekssssa). Competitors will have 1 hour for solving 4 problems with variable scoring distribution. Contest are rated for all HackerRank users.

I want to thank whole HackerRank team for support and opportunity to organize the new format of competition. Especially I want to thank Shafaet, he is really great guy and his help and contributon in contest preparation are incredible. Also I want to thank wanbo and svanidz1 for testing tasks. I hope that this will become a traditional competition and we'll hang out in one of the following HackerRank contest :)

We are waiting your comments and suggestion about contest :)

Good luck and see you on Thursday !

UPD1: Score distribution : 30-40-60-80

The second and third problems have binary score.

UPD2: Contest starts in 15 minutes. Are you ready to become first HourRank winner ?

UPD3: Contest is finished. Editorial is published. Congratulation to winners :

1.I_love_Tanya_Romanova

2.Kostroma

3.anta

4.Lewin

5.HellKitsune

Thank you for participation. I hope you enjoeyed in problems. I wish to hear more comments about task and contest. I will try to correct something in future if it is wrong. Thank you again and see you on next HourRank contest :)

Hello Codeforces community !

I am glad to announce HackerRank 101 Hack 28th editon. The contest will be held on 20th August 2015 at 16:30 UTC. You can sign up for the contest here. Top 10 winners on the leaderboard will receive a HackerRank T-Shirt.

Problems have been set by Nikola Mandic(nikola12345) and Aleksa Plavsic (allllekssssa). The contest will consist of 5 problems with variable scoring distribution. Contest are rated for all HackerRank users. This is our second competition, after Codeforce div 2 round. We think everyone will find something interesting and solvable. Please read all the tasks, some problems that hard for us can be easy for you.

The main charcters of the round are Mika and Zloba. We would like to show how much we appreciate them :)

We want to thank whole HackerRank team, especially to wanbo for testing contest and great advices about tasks and Shafaet for helping and excellent communication. We believe we will cooperate in future with these excellent people.

Also I want to thank my friend Errichto. He is always here to listen my ideas and suggest several options to improve it.

Good luck, we are waiting your comments and impressions about contest !

UPD: Score distribution : 30 — 50 — 80 — 100 — 120

The competition starts in an hour.

UPD2: The contest has ended.

Congratulation to winners :

1.anta

2.uwi

3.Egor

4.mexmans

5.I_love_Tanya_Romanova

Thanks for participating. We hope you enjoyed tasks. We wish to hear any comment, any suggestions for better contest next time.

UPD3: Editorial is published !

Hello everybody !

School is finished. I am in the village. I don't have fast internet and I won't do next competition :(
But, I can write new topic with my 'potato' English with no word HELP ( so you can relax and read next part :D ) !

During this break I plan to learn a lot of things. First I start with learning C++ . Pascal is great language and help me a lot, but without C++ you can't do something very fast and good on the competitions (when I had to write some algorithm with graphs (even dfs) or I had to write SET , always i said — NO WAY , GO TO NEXT TASK ). Now I will change it and no more crying for bad results :)

I also plan to learn many graphs and string algorithms ( now a know 4-5 graphs algo. , KMP and hashing ( everything harder I do with hashing), also I know trie but it wasn't necessary to coding it on any contest ). Normally I plan to do every competition on the summer :D

What will you do during vacation ?

Second part of this blog is about preparing tasks for contest.

My friend and I prepared one contest, for me it was very interesting and good experience. I hope you like our problems... Sorry for hard div 2 round, next time I'll give my best to make better contest. I recived a lot of messages about our contest, many messages were grat, but also I recived some insluts. Please, don't write me it again :) Everything I do because I love programming and this community, maybe I deserved insults , but you don't talk about my friends, proffesor and country on that way !

The last few days I invented many new problems ( I believe I have enough problems for 2 contest ). But I will try with my friend , to come up some very hard problems( D, E div 1), for other problems I think I have enough ideas to devise a daily div 2 contest :D Please give me advice, how I can invent hard problems ( I know it isn't easy and you must know a lot about programming and contests) , but tell me how did you come up your 'famous tasks' ?

Also, If you have some impressions of our contests or some intresting problems on codeforces , I like to hear it .

At the end, I will write one my task ( certainly something like this already exist, but I didn't see it before) :

PROBLEM 1

You have plane with n points (-10^6<=Xi,Yi <=10^6, n<=10^5). You should draw a line which will contain the most points from this set. Print the number of points on this line. (I didn't solve this task, but I expect you can find some solution lower than O(n^2)).

PROBLEM 2

You have plane with n points ( -100<=Xi,Yi<=100, n<=50). Find minimum number of lines needed to cover all the points . ( For previous problem I had some solution, but for this I can't find something normal ).

Thanks for reading, sorry for Englsih and solve tasks ;)

P.S. I can add more intresting tasks.

Hello Codeforces community !

I am glad to announce Codeforces Round 307 (Div. 2) on 12th of June at 19:30 MSK. Authors of this contest are Nikola Mandic (nikola12345) and Aleksa Plavsic (allllekssssa). This is our first round and we really tried to make interesting and solvable problems. Traditionally Div.1 participants can take part out of the competition ( personally I believe that the problems are worth to Div 1 participants, and nobody can solve everything in 20 minutes ). This is the first Serbian round and we want to invite our friends from Serbia to take part in this round and maybe prepare some of next rounds.

The main character of this round is gonna be GukiZ ( our proffesor of computer science ). He really helps us to become better people and developers !

We want to thank Zlobober for help in preparing contest and great advices, Delinur for translating problems statements into Russian and MikeMirzayanov for fantastic Codeforces and Polygon platform !

We wish you great fun, a lot of Successful hacks, Accepted solutions and high rating !

UPD: Scoring distribution: 500 — 1250 — 1750 — 2000 — 2500.

UPD2: Due to technical reasons round was delayed by 10 minutes. Stay tuned!

UPD3: +5 minutes. Thanks for your patience!

UPD4: System testing is complete, but the rating update won't be that fast since we are working on improving our cheater catching system. Thanks for your understanding!

Congratulations to winners!

DIV 1:
1.MrDindows

2.kennethsnow

3.ecnerwala

4.I_love_Tanya_Romanova

5.Hasan0540

DIV 2:
1.hrzhrz_hrzhrz

2.slo

3.wangjing

4.cyber_tourist

5.Moose_Lee

Thanks to all participants. We hope you have a good time and learn something new.

UPD5: Link of editorial !

Today I have a lot of free time. I was looking for competitions today, and I found only one:

DMPG '15 — Gold Division (Open Unofficial Mirror)

Contest Time

Contest site https://dmoj.ca/

Contest isn't very popular ( last time was only 70 participants). If you also have free time, participate and compete against me (I hope for 100 competitiors). Contest has 6 problems and lasts 3 hours. Site also has some rating system...

For me this is new thing,I'd like to try new site and solve new problems.

Lately we have several only Div 1 contests.For me that is very good.Tasks are very good and I always find some task solvable for me. I love div 1 contest, and if I have free time I take part in it.

I noticed only one thing, in my opinion wrong.When we have only div 1 contest, div 2 users can't participate (at least unofficialy).Since there are many div 2 contestants , I think it would be fair to allow them to unofficial contest.They have different rooms,don't have rating and pressure , like div 1 users in only div 2 rounds.

If div 2 competitors agree , It would be nice to change that in the upcoming contest :)

Thanks for reading , and sorry , I'm really trying with English.

I do this task 536B - Tavas and Malekas and I have two solutions ( with hashing and z-function ), but I saw one strange solution with dp.I think that isn't good, but also I don't understand how this solution passed all samples 10723410 ?

Exapmle:

7 2 ababb 1 3

Answer should be 0 , but this code gave result 1.

Hello CF community!

This blog is my way to draw attention and perhaps start an initiative to solve one big problem on Codeforces.

Before every only div 2 round,CF get hundreds of 'new ingenious users' , and they done all problems, have around 5-6 hacks per round and become candidate masters.That means no opportunity for regular div 2 competitors to jump with rating and feel how to be a winner.Maybe this is unsolved problem , but if we try together to stop this , I belive that we will achieve ceratin results.

Now I will write some of my suggestions , I'd love to read your :)

First:

Div 1 competitions are rarely ,but everybody who prepare tasks for only div 2 contest can ask someone with a high rating to help him around the idea of the most difficult problems.This is certainly reduce only div 2 contest.I think that the best users like tourist ,Petr,YuukaKazami... give some advice and help about preparing(Maybe I am wrong ?!).

Second:

Giving price for best 2-3 users in unofficial standings.For Codeforces it wouldn't be a lot of money and number of 'new ingenious users' probably reduce.

Third:

Don't write winners on blog for competiton.A lot of people imagine to be found on it and and don't choose the assets to do so.

Fourth:

Having separated rating graph for div 1 and div 2 contest.How would that work exactly I don't know,but for official competitors it could work as so far , and for div 1 competitors it could be calculated as for big competitions when we have one round for all members.

Fifth:

Change time for div 1 contests.In the previous period I done a small number of div 1 contests.A lot of round was held in unusual time of some working day ( for example tommorow is Monday and in 10 am we have contest ?! ). It's easy to change and fewer people would be hungry for rated contest.

I think that all these things are possible to do , some may have been wrong I love to see your opinion.

Also it would be nice to see suggestion of some important CF guy like MikeMirzayanov and Zlobober...

Thanks for reading and if we are persistent we will surely succeed improve our Codeforces :)

Hello! I plan to compete on some contest tomorrow ( I have free time, and this year didn't start with a lot of success on programming competitions and I must fix it :D ) I follow this link Contests and find two interesting competition tomorrow.

First CodeChef

Second hackerearth

I never before participated in competitions at these sites. Can you give me advice,what competiton is better and tell me something about problems and rules. Thanks!

First, congratulations ,to all CF members, the New Year!

Maybe,this blog  will be boring for you,but I have a wish to share with you impressions from this year's contests.Everything started slowly,I was only newbie and I didn't see how I can improve my programming skills.Always I spent all  time to solve one or two problem on the contests.However I was sure that I will succeed on our country competition,and then BUM!I didn't pass the Regional cometition!I was near the border,but had 10 points less!

After that I started to work harder,I learned some algorithms,I learned some data structures(BIT,Heap,Segment Tree,dsu...) and I had a lot of codeforces competitions where I can get new experience.Also,one important thing in all contests is hacking.On every competition I thought about some special cases and watching other codes.I won points and also I saw some good ways to implement solution.

Now,I know that a long way front of me.I will continue to work and I hope that one day become red!
In my country competitons haven't start yet,but I hope I can at least pass the regional competition :) I will try to solve some harder problems and show that I deserve yellow.
I'd like to mention If Codeforces team let,my friend and I are going organize one CF round!

Thanks for reading,and I hope that  people who are currently weaker than me get one more motive to work.