CF 106237C - Counting Binary Strings (Again)

I can write the editorial, but I need the actual problem statement for Codeforces 106237C - Counting Binary Strings (Again) first.

codeforcescompetitive-programming

CF 106237C - Counting Binary Strings (Again)

Rating: -
Tags: -
Solve time: 28s
Verified: no

Solution

I can write the editorial, but I need the actual problem statement for Codeforces 106237C - Counting Binary Strings (Again) first.

I could not find a reliable copy of that problem from the title and ID alone, and I do not want to invent the constraints, recurrence, or algorithm and give you a misleading editorial.

Please paste the Problem Statement / Input / Output sections (or a link to the problem), and I’ll produce the complete editorial in exactly the requested format, including the Python solution, walkthrough, examples, tests, and edge cases.