HourRank is a super short one hour long algorithmic contest. This time we will have 3 challenges, created by me, _shil and forthright48. As always, thanks to wanbo for testing the challenges and thanks to pkacprzak for helping with editorials.
There are subtasks in each of the problems, so I strongly encourage you to read all the problems.
Participants are ranked by score. If two participants have the same score, the one who reached the score first, wins.
Top-10 contestants will get a HackerRank Tshirt.
In the last round no one was able to get perfect score (though all the problems were solved). Let's see what happens in this round!
Update: scoring 30-50-75
The contest ended. The editorials are now open. Congrats to the winners:
Only top 4 got the perfect score. Congrats to all.
I hope you liked the round, please share your feedbacks.