Deltix Codeforces Autumn Round

Welcome to the third installment of our rounds on Codeforces which will take place on the 28th of November 2021. It is an open and rated round for both divisions. All problems, except the last one, have been created and prepared by members of our team.

We will offer participants 8 problems and 120 minutes to solve them. Please study all problems thoroughly. We wish everybody good luck and high ratings!

We have prepared the following trophies for participants: 

• 1st place: Samsung Galaxy Z Flip3
• 2nd place: Samsung Galaxy Tab S7+
• 3rd place: Samsung Galaxy Watch4

100 competition t-shirts will be distributed randomly between participants outside the top-100 but within the top-1000 and who participated in rated Codeforces rounds before.