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
Motorbike Racing M2 5 0.6219
Overlapping discs M5 7 2.6144
Soccer League M3 81 4.4358
Sorting device MX 41 58.4123
The Mine Field M1 29 5.9629
Toll Trolls M4 13 1.3460

Find out more about this contest and its winners in our blog post.

Rules:

  • Please do not discuss strategy, suggestions or tips in the comments during a live contest. Posting questions clarifying the problem statement is ok. If you are unsure, email us at feedback@codechef.com
  • Contest problems will become visible on February 1st 2010.
  • 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.
  • You can submit solutions as many times as you'd like, there are no penalties for incorrect submissions.
  • Each contest will have one min/max tie breaker problem, where the best solution will receive one point and all other solutions will receive a fraction based how close they come to the best solution.
  • In the unlikely case of an overall tie (including the same score on the tie-breaker) a winner will be randomly chosen from the top scorers.

RESULTS:

Rankings are refreshed every few minutes.

RECENT ACTIVITY:

RECENT COMMENTS

12:54 PM Sep 6th: Sumit Kumar Agarwal commented on Trees Again: can anybody tell me how we can down our time limit??
11:20 AM Sep 6th: atul commented on Communicating Servers: does all the servers in input will be able to cummunicate directly or indirectly? ...
10:03 AM Sep 6th: Stephen Merriman commented on Array Transform: "Any number of times" includes 0 times.
09:04 AM Sep 6th: Saurabhkumar Gune commented on Array Transform: what should be the out output for following test case? 3 2 0 0 1   It is "YES...
08:20 AM Sep 6th: Anshuman Singh commented on Brush Fire: @Lucky This is from the Input section -> " The i'th line starts with an intege...
04:13 AM Sep 6th: Firas Salloum commented on Turbo Sort: @ravi: No , that means N<=1000000
02:36 AM Sep 6th: Stephen Merriman commented on Multiples of 3: [[FAQ]]
02:36 AM Sep 6th: Stephen Merriman commented on Bytelandian Shoppers: That's why this is a contest. You're expected to do the hard work, not other peopl...
02:22 AM Sep 6th: Devanshu Kashyap commented on Small factorials: O god,, help me with other probs... Its very difficult to to get the striking tho...
02:20 AM Sep 6th: Devanshu Kashyap commented on Small factorials: this is the only problem i was able to solve here. It judges you how u r able to m...