I cant understand whats the problem with test case 66(n=10^5 k=1).It gives TLE. During the contest I submitted this code and it gives TLE in 66. After the contest when I saw the test case ,I put a condition of checking if k=1 for immediate passing ,just to see if it worked,and it again gave TLE(code). I used BufferedReader to check if its because of large inputs,but again TLE(code). And its not only me but many who got TLE in 66 using java(see this page). Please tell me where is it going wrong because in test case 65 also n=10^5,k=1 so it cant be a sorting issue or a input issue...But immediately after reading inputs and sorting I am displaying the result for k=1.Then why is it passing for 65 and failing for 66.

Recently I had seen a blog titled something like -**bookmark** and had the links to all tutorial blogs in codeforces.However I was busy that time preparing for my exams, so I could not read it...But now I cant access that blog.Is there a way to find the "older blogs" or does anyone remember that blog...Please share it if you have

Today I had an argument in the viva session with my teacher on the limitations of the Dijkstra algorithm :(
I told that Dijkstra is not applicable if the graph has a negative weight cycle while the teacher says that it is not applicable if it has negative weight edges.That is the graph containing negative weight edges does not compute shortest path correctly even if it does not contain negative weight cycles.
Please anyone clarify my doubt and also give any book or site ,so that I can show it  as a proof to my teacher,(in case I am correct).

Hi there!!
I do not know hoe to implement the Dijksta so could not submit to 144D of codeforces round 103.
After that I took the help of somersault's code.
But my implemtation gives me a compilation error.Note that I have not written the full code.I just wanted to implement Dijkstra.Please help me.

I have just started to learn the 8086 assembly language.The task is to print the sum of 2 16 bit numbers.Here's my code:
org 100h
start:
mov al,5
add al,3
mov dl,al
mov ax,2h
int 21h
end start
But the output is the ascii value of 8.I want to know if there is a way to print the decimal value of 8.If yes then how???

Here are a few suggestions from my side to the codeforces team...I hope they will give some thought on these:

1)Editorials-There should be an editorial tab like the problem set tab or may be an official editorial blog.So that after trying out problems form the problem set if one wishes he can look at the editorials .Even topcoder has an editorial page.

2)Contest timings-The contest timings are almost always the same and many people globally face issues participating  at that time.Since there are about 4 contests in a month each of them can be on the different quarters (24 hour has 4 quarters).

3)Deleting a blog /comment-There should be a provision for a user to delete his blog or a comment.After all it is his blog and therefore his wish to keep it or discard it.

4)Division layouts-At present there are 1485 in Div 1 and 8713 in div2(almost 6 times more).To balance this I suggest that there should be 3 divisions[ Div 1-(>=2000) Div2(>=1600) and Div3 (<1600)]..Implementing this in the present scenario we will have 350 Div 1,2358 in Div 2 and 7490 Div 3 participants .This will increase competitions in the division and give better scope to improve .This also smoothens the transistion from a Beginner->Intermediate->Expert

5)Annual Open Round-To make things different than the usual weekly contests, there may be 1 annual open round like topcoder does.That will make codeforces look even much more brighter among all other online coding systems.

I hope these will be looked at by the codeforces team.You people are doing a wonderful job making coding much more enjoyable for regulars and interesting for the newcomers.Thanks for your efforts.

I was reading convex hull for the first time from CLRS.I thought for another algorithm that would work in O(n) time.I tested it for many test cases and it works fine.Can anyone point out flaws in the algorithm or support it.(Sorry for my bad english)
Lokesh-Scan(Points P)
{
 1.find the leftmost,rightmost,uppermost and lowermost points.In case of ties take the lower-left and upper    right most points;//Since these points are the corner ones they have to be in the hull/
2.Join the above mentioned points;//i.e include them in the hull
3.Now treat the four lines as reference axes individually.i.e if suppose p1,p2,p3,p4 are the lower,right,upper and left points respectively then firstly take p2 as origin and the line p2->p1 as the positive x-axis.If there are any points in the 1st quadrant of this axis system, include the one which has the maximum positive height from the axis in the hull.
4.Do this for all the four lines.(p2->p1,p3->p2,p4->p3 and p1->p4)
}
This algorithm (if correct) works in O(n) time.Line 1 takes O(n) time and line 3 takes O(n) time..
I hope I have made myself clear.Looking for your replies......

Hi friends,
I used the Chelper plugin of Egor and it works well in codeforces.
Then I tried to setup the moj plugin for topcoder arena.I installed it and got the"4 foundS" when I verified it.
But I am not sure how to use it in IntelliJ i.e. how to install it in IntelliJ or with Chelper, how to test my codes ,how to submit etc.(basically all the implementations of the plugins).
Any help to solve my queries will   be regarded...

UPD:Its done.lovro helped me do it.Thanks to him.For those who could not do it here's what to do:

1)Download the plugin.

2)follow the steps written in the instruction file .

3)Arena->editor->select CodeProcessor->configure->select fileedit->configure->goto template ->paste this code

And Yipee!!! now you dont have to test each and every test case in the arena.Your local editor does that for you(for JAVA and c++only).All you have to do is open the problem file in the arena ->the problem file is generated in the folder specified ->write the code(you can see the result for all test cases when you run it locally)->compile in the arena->submit and yipee you saved so much time.....:)

Hello friends, 

I am looking for a coach who could enhance my programming skills.I am ready to pay the fees (provided its in my budget) ,but the teacher has to assure me that he will take regular classes and help me out.If anyone is interested or knows whom to contact ,Please tell me. My e-mail is [email protected] I live in Jamshedpur,India.It would be nicer if I get a live coach ,But I wont mind having an e-coach as well.  

 Regards.

Hi!!! Is there any prizes for winning these Beta rounds???

I participated in the Unknown Language Round and fortunately was able to solve the first problem somehow..I got a rank of 212...Still why am i unrated???could anybody help me??

Is there any formula to calculate ratings??? does it increase on solving from the problem set??