Codeforces Round #142 will be held today at 19:30 in Moscow time, and it will take place in both divisions.
The authors of the problems are me, Evgeny Vihrov (gen), and Andrey Vihrov (andreyv). Both of us are students of the Faculty of Computing in the University of Latvia. This is our very first contest on Codeforces!
Big thanks for the help in preparing the contest go to Gerald Agapov (Gerald), and to Maria Belova (Delinur) — for translating the problem statements in English. Also thanks to Mikhail Mirzayanov (MikeMirzayanov) for the Polygon system, which we found to be great for preparing contest problems.
We hope that each participant will be able find a problem to match his taste. Please, consider reading all the problems!
We wish you an exciting round!
UPD1: The score distribution will be dynamic. The problems will be sorted in order of expected increasing difficulty.
UPD2: Due to the technical problems the contest was extended by 5 minutes. We are sorry for the inconvinience.
UPD3: The analysis of the contest is available. Enjoy!
The round is over! 5 contestants solved all the problems in division 1, and in division 2 only the top four contestants solved all the tasks. Congratulations to the winners!