Hello Codeforces!
We are glad to invite you to Codeforces Round 668 (Div. 1) and Codeforces Round 668 (Div. 2), which will take place on Sep/06/2020 17:35 (Moscow time).
The problems were created by Ari, Kuroni, JettyOller, Monogon, antontrygubO_o and hugopm.
We would like to thank:
dorijanlendvaj, Jatana and enoone for helping with the preparation of the tasks.
gamegame for always being nice and supportive.
DatVu, JettyOller, MofK and atoiz for stealing the round #666, forcing us to retheme around ponies.
Monogon for making the author list more colorful.
redblossom, thenymphsofdelphi, qlf9, mcfr, Tlatoani, aohkgnadnart_, McDic, cup_of_tea, bestial-42-centroids, Noam527, Mbfibat, wolfris, ffao, Falseeee, fpc_coder and fivefourthreeone for testing.
MikeMirzayanov for the Codeforces and Polygon platforms.
There will be 5 problems in Div.1 round and 6 problems in Div.2 round. You will be given 2 hours to solve them (or post memes in the comments if you can't solve any).
We tried to make interesting problems, short statements, useful samples and strong pretests, and we hope you will like it.
Scoring will be announced shortly before the round and editorial will be posted shortly after the round (it is already written).
Good luck!
