Hello,

The unofficial results of APIO 2018 were published today. This scoreboard contains official and unofficial participants.

I removed the unofficial contestants and created a scoreboard similar to the official one (the first 6 results of each country are official). You can see the results here.

Congratulations to all the participants.

P.S. The official results will be published on Friday 18th of May

UPD The official results are available, my prediction was right to some extent

Hi!

I use Code::Blocks 16.01 for coding in C++, but I don't see it as a good platform for debugging and testing, and I want to change it.

Which IDE do think can help me with debugging and testing?

CF contests has returned :)

BTW I'm confused what to do on 14 February, spending Valentine's day with my girlfriend or participating in CF round!

Hi everyone

IOI17 is soon, have you all been preparing for it? I hope for all of you the best of luck in the competition.

I thought we could do something special this year. So how about we exchange our national olympiads T-shirts at IOI (local ones)? It would be a nice way to collect souvenirs.

If we decide on doing that, we need to know beforehand who's participating to decide what amount of t-shirts to bring.

Hello everyone

I'm wondering how to find the number of distinct shortest paths in an undirected unweighted graph !!

any advice !! :D

Hi

These are some problems about Centroid Decomposition , you can learn this algorithm here .

Its complexity is O(nlogn)

I hope these problems would be useful for you :)

• 321C - Ciel the Commander

• 766E - Mahmoud and a xor trip

• 716E - Digit Tree

• 161D - Distance in Tree

• 776F - Sherlock's bet to Moriarty

• 379F - New Year Tree

• 342E - Xenia and Tree

• 293E - Close Vertices

• 150E - Freezing with Style

• 348E - Pilgrims

If there are another problems on CF please put it on comment !!

UPD : The list has been updated

Today worse was beaten by Mhammad1 !!

The last record for the maximum rating change ever was 644 by worse , but today Mhammad1 has beaten this record with a record of 803

Congratulations for Mhammad1 :D

UPD: kingofnumbers has just become one of the top 10 contributors

UPD: vammadur has broken the record with +1164

APIO 2017 results had been announced here

Congrats for everybody !

Hello everybody

Recently I learned a new algorithm which is Centeroid decomposition , but I didn't find enough Information about it.

I didn't understand the usefulness of the algorithm , or when we use it !!

So would you please help and give me more information about it :D

Hello everybody

Recently I have been searching for an online judge contains APIO problems , but I didn't find any thing !!

So could anybody help me and give an online judge contains APIO problems with subtasks judging.

Hello everybody

In the last 3 days , CF doesn't allow me to enter the status pages other than the first.

Anyone else is facing the same problem ?

Hello everybody

Everyone are wondering about the story behind "Limak , the little polar bear".

Too many statements talking about Limak , here , here , here and even on CodeChef

So would anyone tell us about the story behind this famous polar bear

Hello everyone

Recently I have invented some interesting problems (A->D div2), and I'm wondering which online judges can I give the problems to and what can they offer to me.

That moment when CF has too much drugs

Hi everybody,

A few days a ago my friend suggested that I should start training using CMS that way I can have the test cases and the ability to judge solutions without the use of the internet (being in Syria makes the internet a luxury so I can't use that whenever I want) so I want to start using CMS by downloading the test cases and the problems but I have no idea how to do that.

I tried to google it but to no avail...it would be very nice if someone who uses CMS could show me how to set it up.

Thank you for reading...

Hello

Today I tried to solve problem 327E - Axis Walking , but I faced a problem with Time_limit

I kept getting TLE on tests between 7->10 , then I submitted my friend's solution 24099917 which got ACC

but I got TLE on test 11 24109427 , and when I test it on CUSTOM INVOCATION it pass the test with 1372 MS

P.S.:the problem time_limit is 3000 MS

So can anybody help me and tell me the reason of getting TLE

Today I noticed that CF doesn't show you the recent blogs when you are logged in your account

These two pics for the recent actions and took at same moment

the first when I'm logged in my account , and the second when I'm not

these two blogs didn't appear in the first situation

who else faced the same problem ??

That moment when CF gets too much drugs

Hello codeforces.

Today's a Palindrome.

6.10.2016 :D

The legend say that training at the palindromic days is more effective.

train more :3

Hello everybody

I have been searching for online judges which works with subtasks system.

would you help and give me websites like that !! ^_^

thanks everybody :D

Hello guys . I have an issue in dealing with problemes which depend on geometry and math . can you help by give me books or any thing which includes the basic mathematical laws that can help me in math and geometry problems . :D :D :D
Thanks for advice