Hello everyone!

I want to invite you to participate in Jolly Challenge #13. It is a regular contest in Jollybee Online Judge (A relatively new online judge). The contest will be 2 hours long, and the contest will use ACM-ICPC style.

Contest time: December 11, 2015, 20:00 (UTC+7) | your timezone

The problem set consists of 5 problems, prepared by omarkhaled from Egypt, and tested by me, rickychandra, and setiadialvin. The problems will be available in English and Bahasa Indonesia.

If you don't have an account for that online judge, but want to participate in the contest, you can register here: https://jollybeeoj.com/user/login

Link to the contest: https://jollybeeoj.com/user/contest/21/about

To receive updates in your facebook news feed (announcement, etc.), like our fan-page

Problem difficulties are about Div 2 D for the hardest problem compared to the awesome CF contests.

Good luck!