Hello, Codeforces.
Today at 19:30 moscow time, Codeforces Round #197 will take place.
Authors of this round are me and Gerald. I'd like to thank the following people for their contribution: Delinur for translation of the statements and MikeMirzayanov for creation and supportion of Codeforces.
The score for problems: 500 — 1000 — 1500 — 2000 — 3000.
Good luck!
UPD: To make the announcement more interestiong and thrilling we decided to add a horse joke and a photo, taken during the preparation of the round.
Q: What did the teacher say when the horse walked into the class?
A: Why the long face?