Hello Codeforces community,

I would like to invite you to join HackerRank's 101 Hack 52 which starts at 1500 UTC, December 3, 2017.

There will be five tasks and three hours for you to solve them. The contest will be rated and the top ten contestants will receive HackerRank T-shirts!

The problems will have subtasks to make it interesting for everyone. I strongly recommend reading all the problems.

I’m the author of this round. Thanks to adamant for testing the problems, and thanks to kevinsogo for all the help in the other aspects of the contest. Also, thanks to Kerim.K and Infused for help in preparing the problems.

I hope you'll enjoy the problems!

Happy Coding!

Note: We are trying out a slightly different format on the challenges, let us know if you have any feedback.