I am happy to invite you to the codeforces round #493, which happens at Jul/01/2018 17:05 (Moscow time).
Big thanks for people, who tested round — Shiqing cyand1317 Lyu, Andrew GreenGrape Rayskiy, Ivan isaf27 Safonov, Alexey Aleks5d Upirvitsky. Also thanks to Mike MikeMirzayanov Mirzayanov and Nikolay KAN Kalinin for help with round preparation.
And to Mike MikeMirzayanov Mirzayanov for codeforces and polygon systems.
Traditionally, there will be 5 problems for 2 hours. I hope you will enjoy the problemset, good luck and have fun!
Scoring distribution will be published before the round.