EXAM - Editorial ( NCC 2014 )
PROBLEM LINK:ContestPracticeAuthors:Vaibhav Tulsyan, Aditya SarodeTester:Vaibhav TulsyanEditorialist:Vaibhav TulsyanDIFFICULTY:EASYPREREQUISITES:Knapsack ProblemPROBLEM:Given the marks for N questions...
View ArticleINTEG - Editorial
Problem Link:PracticeContestDifficulty:SimplePre-requisites:NoneProblem:Given a list of N integers A[1], A[2], ... A[N], and an integer X, find the minimum cost of making all elements non-negative....
View ArticleIssue with challenge problems
What happened?In the May long contest, contestants were able to make many submissions and extract data about test cases. Few users say this is against rules, others say only the smart ones were able to...
View ArticleCHEFBM - Editorial
PROBLEM LINK:PracticeContestAuthor:Dmytro BerezinTester:Sergey KulikEditorialist:Lalit KunduDIFFICULTY:EASY PREREQUISITES:AD-HOC PROBLEM:There is a N * M matrix, where A[i][j] is j for all i,j. There...
View Articleunderstanding the problem
Hi,can anyone explain in detail what is required in the following program?http://www.codechef.com/NCC2014/problems/MULDIV/ My code http://www.codechef.com/viewsolution/3908975have I misunderstood the...
View ArticleADIGIT - Editorial
PROBLEM LINK:PracticeContestAuthor:Dmytro BerezinTester:Shiplu Hawlader and Mahbubul HasanEditorialist:Lalit KunduDIFFICULTY:SIMPLE-EASY PREREQUISITES:PrecomputationPROBLEM:Given N(<=10^5 ) digits...
View ArticleCNPIIM - Editorial
PROBLEM LINK:PracticeContestAuthor:Bruno OliveiraTester:Shiplu Hawlader and Mahbubul HasanEditorialist:Lalit KunduDIFFICULTY:EASY PREREQUISITES:Number Theory PROBLEM:Find number of 2X2 matrices such...
View ArticleDiscrepancies in the Voters List (VOTERS)
HI , I am getting TLE for Voter question. http://www.codechef.com/viewsolution/3915829Thanks in advance for any help.Thanks rajesh
View ArticleExecution time - INTEST
Can someone please tell me how to decrease the execution time of my code? Currently it is 5.48 Following is my code :#include <iostream> using namespace std; int main() { int n,k,cnt=0,t;...
View ArticleCan Edit Distance be done using 1d array ?
Edit distance is a classical dp problem which can be done using 2d array .. Can it be done using 1D array ?
View ArticleHow to Reduce Running time
I have the following code #include <iostream>include <cstdio>include <algorithm>include <cmath>include <cstdlib>include <vector>using namespace std; string...
View Articletime limit exceeded...
What can I do in order to avoid time limit exceeded for the problem LYRC from practice(hard) section? Could somebody please give me few suggestions? The link to the code I wrote in python 3.1.2 is...
View Articleruntime error(NJEC)
what does meant by runtime error(NJEC)?include<stdio.h>void main() { int i,j,n,temp; scanf("%d",&n); int a[n]; for(i=0;i<n;i++) scanf("%d",&a[i]);="" for(i="0;i<(n-1);i++)" {=""...
View ArticleTLE for Sums in a Triangle with Memoization
Hi,I tried this code for Sums in a Triangle:import sys T = int(sys.stdin.readline()) memo = {} def solve(i, j, m, limit): # print "i:"+str(i) if i==limit: return 0 if (i, j) in memo: # print "Reused:",...
View ArticleMike and Task Packages WA in Python
Hi,I coded this solution for MIKE2:from __future__ import division def read_mapped(func=lambda x:x): return map(func, raw_input().split(" ")) def read_array(N, func): l = [] for i in xrange(N):...
View ArticleMAXCOUNT : python code NZEC error
I submitted a solution to MAXCOUNT problem in python 2.7 , but it shows NZEC. why is it so? I want to know how to submit python codes? Do I need to include numpy, sys , scipy, etc. libraries in the...
View Articleshowing wrong answer when it is working f9 on windows 7
Chef-jumping ques http://www.codechef.com/MAY14/problems/OJUMPSFollowing is my code, which is a success on ideone.com, the onl9 compiler:public class Main{public static void main (java.lang.String[]...
View ArticleANUBGC question :)
Hi,Awesome cook-off and hats off to setter for so many good problems!!I know that the solution for this problem must rely on the "constructive/deterministic side" i.e. we must be able to construct...
View ArticleWhat is the method to solve ANUBGC?
How do we calculate the number of numbers less than N which contain a certain digit 'd', within time limit?
View Article