It's my first HourRank but I've prepared problems for HackerRank several times. I also used to prepare problems for Codeforces long time ago.
There will be three problems and one hour to solve them. Contest will be rated and top-10 contestants on the leaderboard will receive amazing HackerRank T-shirts!
I'd like to thank wanbo for testing the problems, it's always a pleasure to work with him. I hope you will enjoy the problems and some of you will solve everything.
Scoring will be: 20-40-80. Editorials will be published right after the contest.