Now the winter SIS (Summer Informatics School) is taking place, and parallel A+A0 and its teachers have prepared a complete Codeforces Round. You can check previous rounds, prepared by SIS students: Codeforces Round #612, Codeforces Round #530.
Problems are authored and prepared by AliceG, pakhomovee, MadProgrammer, ArtNext, fastmath, IgorI, Kapt, KhB, Hello_zoka, Karabutsa, ligaydima, Mangooste, pelmenner, Allvik06 under the guidance of meshanya, cdkrot, kokokostya, craborac, scanhex.
We would like to thank:
300iq for round coordination.
MikeMirzayanov for Polygon and Codeforces.
We recommend you to read the statements of all problems. Scoring will be announced later.
Scoring distribution is: $$$500 - 750 - 1000 - 1500 - 2000 - 2500$$$ in both divisions.
System testing is over. Thank you for participating! We hope that you liked our problems!
Congratulations to the winners:
All of them have solved problem E (with neal being the first). Problem F was quite challenging and no one have solved it during the contest.