I am very glad to invite you to the Codeforces Round #672 (Div. 2), which will take place in Sep/24/2020 17:35 (Moscow time). This round will be rated for the participants with rating lower than 2100.
All tasks were made by me, but gepardo helped me a lot with the last two tasks, probably these tasks wouldn't have appeared if he didn't help me.
My thanks to:
antontrygubO_o for coordinating this round. With this great coordination only good tasks remained in the contest.
gepardo made a lot, there wouldn't have been this contest if he didn't help me. He not only helped me with making last two tasks, but also helped me to understand how to make tasks for Codeforces rounds. Thanks!
EIK this is the person who teached me competitive programming — my Informatics teacher. Thanks!
MikeMirzayanov for Codeforces and Polygon platforms. Thanks!
You for participating in this round. Thanks!
You will have 2 hours for solving 5 tasks, one of which will be divided into easy and hard verions. I hope you will enjoy the round, I tried to make
short statements and strong pretests interesting tasks.
Score distribution: 500 — 1000 — (1000 + 1250) — 2000 — 3000
UPD: The editorial is available.
English version will be ready after the system testing is over.
UPD2: The english version of the editorial is ready.