Hi, Codeforces!

We are glad to invite you to take part in Codeforces Round 569 (Div. 1) and Codeforces Round 569 (Div. 2), which will be held on Friday, June 21, 2019 at 19:35. The round will be rated for all participants from both divisions.

Problems for the round have been proposed by Ivan ScreaMood Fedorov, Kyrill kirillbogatiy Bessonov, Mukhammadjon Mr.Hakimov Hakimov, Fedor ---------- Ushakov, Maxim lessmeaning Yagafarov and me, Dmitry DmitryGrigorev Grigoryev.

The round have been prepared by us, Dmitry DmitryGrigorev Grigoryev, Fedor ---------- Ushakov, Dmitry TheWayISteppedOutTheCar Piskalov, Maxim lessmeaning Yagafarov and Mukhammadjon Mr.Hakimov Hakimov.

We'd like to give thanks to Ildar 300iq Gainullin for excellent coordination of the round, and to Mike MikeMirzayanov Mirzayanov as well for his unbelievable Codeforces and Polygon platforms!

Participants in each division will be offered 5 problems and 2 hours to solve them. During the round you will be helping for pupils of one usual Moscow school. Score distribution will be announced, traditionally, closer to the start of the contest

Good luck!