SETTER: Lewin , Subham , pkacprzak , Anand TESTER: Xellos , Prateek

December Circuits '17 RATED CONTEST

Challenge Over

OPENS AT: Dec 15, 2017, 09:30 AM

CLOSES ON: Dec 24, 2017, 09:30 AM

DURATION: 9 days


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There has been a technical glitch from HackerEarth's side during the contest. We apologize for the inconvenience caused. Due to the issue, we are making December Circuits 2...



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We are conducting a marathon competitive programming challenge December Circuits starting from 15th December 2017 IST. The objective of December Circuits is to challenge the talented and creative minds in competitive programming with some interesting algorithmic problems.

The participants will be challenged by Multiple Problem Setters with 8 problems of varying difficulty levels in a duration of 9 days. Here is the detailed time line of the challenge,

  • Day-0 : Problem-1 (Easy) , Problem-2 (Easy),Problem-3 (Approximate)
  • Day-2 : Problem-4 (Easy-Medium) , Problem-5 (Medium)
  • Day-4 : Problem-6 (Medium) , Problem-7 (Medium-Hard)
  • Day-6 : Problem-8 (Hard)
  • Day-9 : Challenge Ends

We will publish a new set of problems every 48 hours (Very Easy, Easy, Medium, Hard).

The smartest ones will be awarded amazon gift vouchers,

  • First Prize: $100
  • Second Prize: $75
  • Third Prizes: $50

Top 5 will also win HackerEarth T-shirts.

- In order to be able to claim your prizes, your HackerEarth profile must be completed more than 50% (Location details of the hacker is a must to claim the prizes).
- The prizes will be disbursed in the first week of the following month.
- Ratings of the particular challenge will be updated in the user profile within 5 days after the challenge is over


  1. Before you attempt programming questions, you should choose a language from the given list.

  2. All inputs for the programming problems are from STDIN and output to STDOUT....



Sample Challenge

Can I participate in a sample challenge?

Yes, we recommend that you participate in our sample challenge.

This challenge enables you to understand how to pa...

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