What kind of comment should I post on the problem page?
Is there any comment posting guideline? I am new on this website. I have so many doubts while I participate in a contest. Can I ask them on the problem page by posting a comment? Will I be banned for...
View ArticleYet Another Number Game
In our question said that "both play optimally". and in the question said that "a player can subtract from N any proper divisor (not equal to N)". I use this method: n=49 d(49)={1,7,49} 1)Alice:...
View ArticleSMPLSUM - Editorial
PROBLEM LINK:PracticeContestAuthor:Kirill ShchetininTester:Istvan NagyEditorialist:XellosDIFFICULTY:EASYPREREQUISITES:Factorisation using the sieve of Erathostenes.PROBLEM:You're given many values of...
View ArticleRRSUM - editorial
PROBLEM LINK:PracticeContestAuthor:Roman RubanenkoTester:Shiplu HawladerEditorialist:Praveen DhinwaDIFFICULTY:MediumPREREQUISITES:Simple Math.PROBLEM:Given N. Let A = {1, 2, , N} and B = {N + 1, , 2 *...
View ArticleSnackdown goodie dispatch
Hi,is there any information regarding Snackdown 2015 T-shirt dispatch? I haven't heard from organizers in a long time, so I was just wondering when could we expect the deliveries to happen?Regards,...
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Introduction to Graphs: Definitions, Traversal, Depth-First Search
Hello @all,As I have mentioned on several posts here on forums, I am only now starting to learn graphs in a more educated, methodical and serious way, so, after I have studied DFS for few days and due...
View ArticleCLPERM - Editorial
PROBLEM LINK:PracticeContestAuthor:Sunny AggarwalTester:Shiplu HawladerEditorialist:Lalit KunduDIFFICULTY:MEDIUM PRE-REQUISITES:MathsPROBLEM:K numbers denoted by array B from set S = [1,2,...N] are...
View ArticleWhat are karma points?
I am new to this karma system, Can you explain me why is it called so? What has karma points got to do with contribution?
View ArticleHS08TEST - Editorial
PROBLEM LINK:PracticeAuthor:ADMINEditorialist:SUSHANT AGARWALDIFFICULTY:CAKEWALKPREREQUISITES:Basic looping,Basic Input/Output,Data TypesEXPLANATION:Please refer to the sample solution given by...
View ArticleBEX - Editorial
PROBLEM LINKSPracticeContestDIFFICULTYEASYPREREQUISITESStack Data StructurePROBLEMHarry has a lot of books messed on the floor. He keeps a pile of books. At any time, he can put a book that has some...
View ArticleACM ICPC Asia Amritapuri Practice session 2 Editorials
Can someone explain logic of problems of recently concluded 2nd practice session. Thanks ! here is the link for first 2 questions imgur.com/a/2VDpoEven a small hint would be great.
View ArticleBTREEKK - Editorial
PROBLEM LINK:PracticeContestAuthor:Kunal KhannaEditorialist:Arjun PDIFFICULTY:Easy-MediumPREREQUISITES:NonePROBLEM:You have a complete binary tree of $N$ nodes. Given an integer $X$, find two...
View ArticleHow to find the recurrece for Domino tiling?
Give a rectangle of width W and height 2*H-1.How many ways we can fill the rectangle with 1 x H tiles? How to find reccurence relation for this type of problems.(This problems is from Topcoder TCO...
View ArticleHow can i submit solutions to previous contests?
Is there a way by which one can submit solutions to earlier contest?
View ArticleWhy do I get a SIGSEGV?
Why I am getting a runtime error SIGSEGV in the problem? Where I am going wrong?
View ArticleSolving Range Minimum Queries using Binary Indexed Trees (Fenwick Trees)
Formally, the Range Minimum Query Problem is:Given an array A[0, N-1] , Find the position of the element with the minimum value between any two given indices.Now, the standard solution is to use a...
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CHRL4 - Editorial
PROBLEM LINKSContestPracticeAuthor: Roman FurkoTester: Sergey KulikEditorialist: Praveen Reddy VakaDIFFICULTY:easy-mediumPREREQUISITES:basic dp, sliding window minimumEXPLANATIONThis can be modelled as...
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Contribution - AUGUST 2015
Dear @adminThe goodies for AUGUST contribution is not yet dispatched, it has been 2 months since I have mailed you guys. And you people dont reply to our emails. See this issue.Thanks.
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