Hello everyone!
JOI Open Contest 2019 will be held on July 14. (04:00-09:00 UTC) and July 14. (10:00-15:00 UTC). As the tasks in these rounds are the same, you can participate in whichever round you like.
The contest duration is 5 hours and there will be 3 tasks. Each submitted source program must be written in either C++ or Java. Problem statements will be provided both in Japanese and in English.
You can find the details in the contest page.
The past contests are also available in this page. Since the judge server isn't available after the contests, please download the testcases when you want to test your code.
Good luck and have fun!