ALORA5 - Editorial
Problem link : Order Of PheonixAuthor : Ritesh GuptaTester : Romit KumarEditorialist : Abhishek KumarPre-Requisite : Mahonian Numbers, Range update, Prefix sum Problem : You are given an integer n. For...
View ArticleExtremely unbalanced short contests
It has been my observation that CodeChef's short contests like monthly Cook-Offs and Lunchtimes have become extremely unbalanced in difficulty level. The best example I have is of COOK101 (December...
View ArticleALORA3 - Editorial
Problem Link : Prisoner of AzkabanAuthor : Vikash Kumar PatelTester : Rishabh SethiEditorialist : Rohit KumarPre-Requisite : DFS and similars, DSU Problem : In this problem we need to create...
View ArticleTSECJC03 - Editorial
Problem Link:PracticeContestAuthor:tseccodecellDIFFICULTY :Easy-MediumPRE-REQUISITES:Sorting, Priority Queue, Array TraversalPROBLEM:Given a list of $N$ people, you have to choose $M$ of them in the...
View ArticleTSECJC04 - Editorial
Problem Link:PracticeContestAuthor:tseccodecellDIFFICULTY:MediumPRE-REQUISITES:Array Traversal, Binary SearchPROBLEM:You are given N values of height of water containers. You need to fill water in...
View ArticleTSECJC05 - Editorial
Problem Link:PracticeContestAuthor:tseccodecellDIFFICULTY:MediumPRE-REQUISITES:Basic Combinatorics, Lucas TheoremPROBLEM:Find the number of graphs possible $N$ vertices and $M$ edges.All vertices and...
View ArticleTSECJC06 - Editorial
Problem Link:PracticeContestAuthor:tseccodecellDIFFICULTY:MediumPRE-REQUISITES:brute force, flood fill, grid traversalPROBLEM:You are given a grid of size $N*M$ with some blocked cellsFind the longest...
View ArticleTSECJC02 - Editorial
PROBLEM LINK:PracticeContestAuthor:tseccodecellDIFFICULTY:EasyPREREQUISITES:Primality testPROBLEM:Given the first two numbers of a sequence $F1$ and $F2$, you have to generate a sequence such that...
View ArticleTWOSTR - Editorial
PROBLEM LINK:PracticeContestAuthor:Tasnim Imran SunnyTester:Istvan NagyEditorialist:Lalit KunduDIFFICULTY:CakewalkPREREQUISITES:basic programming, stringsPROBLEM:Chef wants to implement wildcard...
View ArticleALTARAY - Editorial
PROBLEM LINK:ContestPracticeAuthors:Jaub SafinTesters:Vasya AntoniukTranslators:Vasya Antoniuk (Russian), Team VNOI (Vietnamese) and Hu Zecong (Mandarin)Editorialist:Praveen...
View ArticlePLINTHP3 Editiorial without Lazy Propogation
Question Link: LinkThis can easily be solved with lazy propagation and that is the first method that strikes the mind during the live contest. But after thinking about it for some time I thought of an...
View ArticleEARTSEQ - EDITORIAL
PROBLEM LINK:PracticeContest: Division 1Contest: Division 2Setter:Evgeniy ArtemovTester:Xiuhan WangEditorialist:Taranpreet SinghDIFFICULTY:Easy-MediumPREREQUISITES:Sieve of Eratosthenes, Number-Theory...
View ArticleHBDANA - Editorial
PROBLEM LINK:PracticeContestSetter:Aakash JaiswalTester:Deepansh ParmaniEditorialist:Akash BhalotiaDIFFICULTY:CAKEWALKPREREQUISITES:SortingPROBLEM:Given an array of size N, find the sum of the K...
View ArticleIs there any formula to calculate nth fibonacci number ?
Suppose we are given, a(0)=x ; a(1)=y and the relation, a[i]=a[i-1]+a[i-2] and , we are asked to calculate a(n) , how to calculate it if n is as big as 10^9 ?Thanks ! :-)
View ArticleDoubt related to a Dynamic Programming problem!
I sincerely hope, that this question does not belong to any ongoing contest : D @aryanc403If it does, please don't answer this question :)We are given integers,namely, a,b,c and d. Also,...
View ArticleHow to get multiple strings containing space characters from user using c...
Sir,I have just started programming....Whenever I'm trying to solve a problem ,I"m facing some problems with "the input sector"....Most of the problems require multiple strings to input...I have tried...
View ArticleClarification
Hello Sir/Mam,How I will get a detailed clarification on any problem. My current problem is Home » Practice(Easy) » Decreasing String //Problem Code: DECSTR. I have not understood this problem. Can you...
View ArticleInvitation for Innovacion 2019 : Algorithmist
Hello Coders!Looking for challenges to showcase your skills. We have one for you. Team Innovación brings ALGORITHMIST 2019. This is a solo coding competition which will go live from 08:00 PM today on...
View ArticleHow do I upload a problem on CodeChef?
Recently I have received access to upload a problem on CodeChef. I want to know the process of how to do so. Can anyone help me to do so?
View ArticleMaximum Weight Difference
Hello Sir/Mam,Please give me some corner test case for this ques. I am getting WA.
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