I want to invite you to participate in HackerEarth April Clash '15. It is 12h-long contest scheduled on April, 18 (check your timezone). Problemset consists of 4 algorithmic tasks with partial solutions allowed — you get points for every test that you solution passed, and one approximate problem - your score for this task depends on how good your solution is comparing to current best solution.
Problemset was prepared by Pavel Sheftelevich - you may already know him for preparing some interesting problems for CodeChef contests, he was an author of January Lunchtime 2015. I was co-working with him as a tester.
Top 3 winners will receive HackerEarth T-shirt!