Hello Codeforces Community!
I invite you to October Easy '15 on first day of October at 19:00 MSK. Contest will be of difficulty similar to div2 CF round. Will you manage to solve all 6 problems in 3 hours? Will anybody do it in 1 hour?
Problems will be given in random order. Each problem is worth 100 points but scoring is partial so try to pass as many tests as possible!
I want to thank Arjit Srivastava (belowthebelt) for his great help with HackerEarth's system and website. And big thanks go to Akul Sareen (akulsareen) — it was so nice to work with him. He is a tester and editorials' writer. I hope I will work again with these two guys.
Enjoy problems!