Hello, Codeforces.
Codeforces Round 389 (Div. 2) will start on December 25 (Sunday), 09:05 (UTC). It will be based on Technocup 2017 Elimination Round 3. So, if you are a Russian-speaking high-school student, please take part in the Technocup 2017.
Many thanks to KAN, fcspartakm, Endagorion, Kostroma and Golovanov399 Hope to extend the list soon because of testers. Also some problem ideas are mine.
I hope you will like problems. It will be 6 problems.
Wish you good luck and bugless code
UPD: The scoring is 500 - 1000 — 1500 — 2000 — 2500 — 2500