Hello everyone! The first round of the 8VC Venture Cup 2017 will be held on Sunday.
I am honoured to be the problemsetter of the round. Reyna helped me a lot. Huge applause to KAN for his valuable coordinator's help, and MikeMirzayanov for his admirable work for the Codeforces comunity. I also want to thank testers very much (Alexey I_Remember_Olya_ashmelev Shmelev and Alex AlexFetisov Fetisov).
This round is a first stage of 8VC Venture Cup 2017. If you want to acknowledge yourselves with the competition, try here.
The main character of the round is PolandBall. It's a small friendly Ball who lives in a forest along with other Balls. You'll surely like it :)
I tried to fulfill your demands with a various, interesting and challenging problems described in a concise way.
Hope to see you soon, good luck and have fun!
UPD1: Scoring 500 — 1000 — 1500 — 2250 — 2500 — 2750 — 3500.
UPD2 Thank you for participation! Contest is over. Did you like the problemset? Feel free to comment =)
Hope you've had a good time with PolandBall solving the problems.
Congratulations to all the winners and TOP-200 who advances into 8VC Finals =)