Career advice
Okay I know dis is nit d place to ask dis kind of questions but I am desperate for help nd people on codechef r probably d best for this. Plz help me choose between IIEST Shibpur CSE Dual degree( B....
View ArticleSum Of Digits Of A Simple Factorial
Tell me any other shorter method for this program- include< iostream>include< conio.h>using namespace std;float f=1,n;void fact(float );void sum(float );int main(){int t,i;...
View ArticleCan't understand solution on Rohith and Circles problem from July Challenge
I am struggling with this solution for Rohith and Circles problem. Particularly, I do not understand where the line yl=(.25*((1.0/r4)-(1.0/r3)))-rs; comes from. (This is the y-coordinate of leftmost...
View ArticleMCHEF 1D DP Solution ?
Hi, can someone please explain MCHEF 1D DP solution, example this one.It would be really helpful. Thanks.
View ArticleDivision of 0 by a double not 0?
solution code: http://www.codechef.com/viewsolution/7482546 problem : SEAGM2, JULy15in the solve function,ld ans=win/r; if(win==0) ans=0; //solution fails for 10 points but passes for 90 points, after...
View ArticleGetting WA for ADDMUL JULY15
this is my solution http://www.codechef.com/viewsolution/7429948
View ArticleVague observation MCHEF JULY LONG CHALLENGE
In my solution http://www.codechef.com/viewsolution/7479607 , in the nested for loop in main, if I don't use the variable val and directly write j<=L[i].size()-1, then it is not running. Why is that...
View ArticleMCHEF - Weirdest problem ever!?
Take a look at these two submissions made by me:http://www.codechef.com/viewsolution/7483130Result: AC (for both tasks)http://www.codechef.com/viewsolution/7483167Result: TLE (for second task)Note that...
View ArticleTime Complexity Calculation...
*** hi to ALLI have very stupid doubt related to time complexity..my doubt is here..1<=T<=P (T-No. of test Cases)1<=N<=K (N-Input size....)*suppose time complexity of solution for a given...
View Articlehow to contact a guy on codechef?
I would like to contact @vijay_cipher to ask a question about his solution on Rohith and Circles problem from last july challenge. Is here anybody who knows how one can do it over codechef?anyways,...
View ArticleMAXDIFFW - Editorial
PROBLEM LINK:PracticeContestAuthor:Mugurel Ionut AndreicaTester:Mugurel Ionut AndreicaEditorialist:Lalit KunduDIFFICULTY:ChallengePREREQUISITES:challenge, heuristics, graphs,...
View Articleplzz share your solution
if someone has solved recent july long challenge MCHEF question using lazy propogation , then plz share it's solution here . I am solving lazypropogation question first time, so i have to clear some...
View ArticlePRIMEOB - Editorial
PROBLEM LINK:ContestPracticeAuthor:Roshan ChoudharyDIFFICULTY:EasyPREREQUISITES:Number Theory , Fermat primality testPROBLEM:Given a number find wheter it is prime or not.EXPLANATION:If we want to test...
View Articleblogs for beginner
Here I want to know useful link for study graph algorithm.please provide some link related to competitive programming advanced math ..which should be easy to understand....):Por any suggestion or...
View ArticleWA- HDILEVER
Getting WA for the problem HDELIVER. Here is a link to the solution submitted by me..
View ArticleOutput problem in C
One of my friend gave me this code to run it on my computer. I couldn't understand the output. Here is the code:include<stdio.h>void main() { int i; int ar[]={1,2,3,4}; for(i=0;ar[i]!=NULL;i++);...
View ArticleShould random number generator be used in Codechef Questions ??
Should random number generator seeded by time ( srand(time(0))) be used in codechef question?i found it in the settler's solution...
View ArticleCHEFD - Editorial
Problem link:contestpracticeDifficulty :Medium Pre-requisites :Binary Indexed Tree or Sets in C++[Balanced Binary Search Trees]Problem:You are given an array of N integers. You have to make M queries....
View ArticleAbsurd decrease in rating
A person having higher rating than me and scoring equal(even same questions done) to me this month's long contest had increase in his ratings while i saw a decrease in mine. :( Please explain.
View ArticleStructure variables initalization
Are the integer variables of structure automatically initalized to 0??
View Article