Hi everybody,
This Sunday there will be a Moscow programming competition for school students of grades from 6 to 9. This contest is prepared by Moscow Olympiad Scientific Committee that you may know by Moscow Open Olympiad, Moscow Team Olympiad and Metropolises Olympiad (rounds 327, 342, 345, 376, 401, 433, 441, 466, 469, 507, 516).
Round will be held at 10:05 UTC on Saturday. You will be given 6 problems and 2 hours to solve them. Round will be rated for second division (rating below 2100). As usual, participants from the first division can participate in a contest out of competition.
Problems are prepared by vintage_Vlad_Makeev, grphil, cdkrot, VFeafanov, Sehnsucht, Sender, voidmax under my supervision.
Thanks to cdkrot for the round coordination and statement translation, and also thanks for MikeMirzayanov for systems Codeforces and Polygon, which was used to prepare problems of this olympiad.
Good luck everybody!
UPD1: Due to some last-minute changes, there will be 7 problems.
UPD2: Winners!
Div 2:
Div.1 + Div.2:
UPD3: Editorial