Try your hand at one of the practice problems, and submit your solution in the language of your choice (our judge accepts solutions in over 35+ languages). Receive points, and move up through the CodeChef ranks. Get better, and better prepare yourself for the competitions
Name Code Successful Submissions Accuracy
Breaking Into Atoms ATOMS 91 46.34
Three Way Communications COMM3 265 58.02
Icing Crowns CROWNS 5 18.52
Dance Floor Energy ENERGY 15 39.53
Integer Sequences SEQUENCE 29 22.22

The Contest has now ended!

Check out the contest editorial here.
Check out the Winners Blog post here.


Problems have been transferred to the practice section.


Rules:

In case you are a new user, you will need to first register for a CodeChef ID here.

 

  • Please do not discuss strategy, suggestions or tips in the comments during a live contest. Posting questions clarifying the problem statement is ok. Comments will be published only after admin approval during the contest. If you are unsure, email us at feedback@codechef.com

  • You can also send in your queries in an email to contest-admin@codechef.com, during the contest.

  • Contest problems will become visible on February 20th, 2011 at 21:30 (IST). There will be 5 problems in all.

  • You will receive one point for solving a problem (passing all test cases - no partial credit), regardless of the level of difficulty of that problem.

  • Users are ranked according to the most problems solved. Ties will be broken by the total time for each user in ascending order of time.

  • The total time is the sum of the time consumed for each problem solved. The time consumed for a solved problem is the time elapsed from the beginning of the contest to the submittal of the first accepted run plus 20 penalty minutes for every previously rejected run for that problem. There is no time consumed for a problem that is not solved.

Announcements

11:50pm: Clarification regarding the sample input has been added to the problem ENERGY as comment. Regret the inconvenience caused.

10:25pm: The problem statement for the problem ENERGY has been updated. Test Case Annotation is added to make the sample cases more clear.

09:30pm: The Rank List for the CodeChef January Cook Off is available here: http://www.codechef.com/rankings/COOK07

CONTEST ENDED.

RESULTS:

RECENT ACTIVITY:

RECENT COMMENTS FOR THIS SECTION:

12:18 AM Feb 21st: bhogal08547 commented on Three Way Communications: #include<iostream>
#include<math.h>
using namespace std;
11:49 PM Feb 20th: zac_adm commented on Dance Floor Energy: @ Mikhail You are right. The original test case was: 4 4 40
0 17 3 0 1 3<...
11:37 PM Feb 20th: mmaxio commented on Dance Floor Energy: In third sample case: 4 3 40
0 17 3 0 1 3
5 34 2 2 3
21 40 3 0 1 2...
11:29 PM Feb 20th: zac_adm commented on Breaking Into Atoms: No problem :)
11:28 PM Feb 20th: RVA commented on Breaking Into Atoms: oops sorry.. realised my mistake in interpretation!!
11:24 PM Feb 20th: zac_adm commented on Breaking Into Atoms: @ Rohit Is there some part of the problem statement that you don't understand?
11:13 PM Feb 20th: RVA commented on Breaking Into Atoms: Pls explain one of the test cases...
10:52 PM Feb 20th: zac_adm commented on Breaking Into Atoms: The subsets are not necessarily proper subsets. They can be equal.
10:46 PM Feb 20th: rajneesh2k10 commented on Breaking Into Atoms: @admin: here subset means proper subset??
10:39 PM Feb 20th: aviraldg commented on Three Way Communications: Just to clarify: It appears that the problem was caused as I'm on Python2.6 and Co...
CodeChef is a global programming communityCodeChef hosts online programming competitions