Hello Codeforces :)
The contest is rated and top 10 contestants from leaderboard will win HackerRank T-Shirts :D
Contestants will have 1 hour to solve these problems, which I hope is enough, but not more than enough. I hope you will enjoy your hour with Alex, Professor Numerico, Dumdum and Karas.
Best of luck for the contest. See you on leaderboard.
UPD1: Less than 12 hours left. Don't forget to register :).
UPD2: Score distribution: 20 — 40 — 70 — 70.
UPD3: Contest is finished. Editorial is published. Congratulation to winners :
Here are the top 5: