I invite you to take part in HackerRank HourRank 19 starting on April 2nd 2017. The contest duration is 1 hours. There will be three algorithmic problems of various difficulty.

The chief author of this round is torquecode. The chief tester is pkacprzak. Thanks to Piotr Gajowiak and Wild_Hamster for pre-solving the problems and giving valuable opinions.

The problems will have subtasks to make them interesting for everyone. I strongly recommend to read all the problems.

The contestants are ranked by score. If two contestants get the same score, the person who reached the score first is ranked higher.

Happy Coding!