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 Kontes, Professor Numerico, Dumdum and Karas.
Best of luck for the contest. See you on leaderboard.