SnackDown 2017
We are happy to announce the CodeChef SnackDown 2017 schedule. It is open for anyone with a knack of programming. Whether you are studying in school, or college, a working professional, or a self...
View ArticleSuggestion to Include No of contests participated.
I feel that it would be nice if Codechef adds this extra feature . Below the graph of Codechef Rating( Combined ) , No of Rated Contests Participated: x gets displayed. It would be another interesting...
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Video Editorial - FEB17 - GERMANDE
Hi Everyone!I have made two video editorials for the Feb Long Challenge. Its on 'Gerrymander' and 'Most Frequent Element'.FEB17 - GERMANDEFEB17 - MFREQFEB17 - EUGENEFEB17 - INTERVALI am in the process...
View ArticleMIXFLVOR - Editorial
PROBLEM LINK:ContestPracticeAuthor:Hasan JaddouhTesters:Kamil DebowskiEditorialist:Hasan JaddouhDifficulty:Medium-hardPrerequisites:Gaussian-elimination, two pointers, two stacks trickProblem...
View ArticleMIXFLVOR: Supporting Deleting latest-added element onwards. Can someone...
I have understood the 2 lemmas in the editorial: https://discuss.codechef.com/questions/91508/mixflvor-editorial I am not able to understand why the setter wants to use 2 stacks in the first place and...
View ArticleWhen will the editorial for December Long Challenge'16 and Febuary Long...
It's been around 3 months for December Challenge and the editorials are not posted yet. Please upload them soon.
View ArticleEXTRAN - Editorial
PROBLEM LINK:PracticeContestAuthor:Kamil DębowskiTesters:Sergey KulikEditorialist:Pawel KacprzakDIFFICULTY:SimplePREREQUISITES:Sorting, basic programmingPROBLEM:We call a sequence of integers nice if...
View ArticleSORTROW - Editorial
PROBLEM LINK:PracticeContestAuthor:Kamil DębowskiTester:Sergey KulikEditorialist:Pawel KacprzakDIFFICULTY:ChallengePREREQUISITES:Optimization skills, dynamic programmingPROBLEM:For a given grid with...
View ArticleXENTASK - Editorial
PROBLEM LINK:PracticeContestAuthor:Vaibhav TulsyanTesters:Sergey Kulik, Kamil DębowskiEditorialist:Pawel KacprzakDIFFICULTY:CAKEWALKPREREQUISITES:Most basic programmingPROBLEM:There are $N$ tasks...
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BEARTRAP - Editorial
PROBLEM LINK:PracticeContestAuthor:Kamil DębowskiTester:Sergey KulikEditorialist:Pawel KacprzakDIFFICULTY:HardPREREQUISITES:CreativityPROBLEM:The task is to win a modified version of the game known as...
View ArticleATM problem
include<stdio.h>main() { int wit; float bal; scanf("%d%f",&wit,&bal); if((wit>0)&&(bal>=0)&&(wit<=2000)&&(bal<=2000)) {...
View ArticleTUPLES2 - Editorial
PROBLEM LINK:PracticeContestAuthor:Hanlin RenTesters:Sergey Kulik, Kamil DębowskiEditorialist:Pawel KacprzakDIFFICULTY:HardPREREQUISITES:Trees, dynamic programming, centroid decompositionPROBLEM:For a...
View ArticleByterace 2017 MODNIM Editorial
We have to see if trump can win the game given that Obama plays optimally. This is same as checking if trump can win if he plays optimally. We can assume that trump gets 2 moves while Obama gets one....
View ArticleCheaters using StackOverflow
I was reading a solution for PSHTBRTH and found a referrence to following StackOverflow link. Note that this question was asked on March 6, 2017 (during the contest).Therefore, all those contestants...
View ArticleHow should I ask questions
I searched the previous questions on Codechef and found What kinds of questions can I ask here?. This provides us with what kind of questions to ask. But I would also like to get a better more detailed...
View ArticleWhat are the memory limit and stack size on CodeChef?
I wanted to know the limit of the memory for a single program execution and stack size on CodeChef
View ArticlePSHTBRTH - Editorial
PROBLEM LINK:PracticeContestAuthor:Ivan FeketeTesters:Sergey Kulik, Kamil DębowskiEditorialist:Pawel KacprzakDIFFICULTY:MediumPREREQUISITES:Game theory, Sprague–Grundy theorem, Segment treePROBLEM:Two...
View Articlememory limit on c/c++ program
I wanna know that how to declare an array of more than 10^7 .. C/C++ only allows to declare array of 10^7 .. what if i want to declare array of more than 10^7.. anyone please help ..
View ArticleUnofficial editorial of first five questions (not SORTROW) of MAR17 Long...
Hello guys,I have a Facebook page where I try to post my approach to the problems I solve in any contests. I created this page for two reasons, First, to revise any new things I may have learnt during...
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