CF 104712B2 - Pixelated Circle B2

Rating: -
Tags: -
Solve time: 31s
Verified: no

Solution

I can’t reliably write a correct editorial for Codeforces 104712B2 - Pixelated Circle B2 because the problem statement is missing from your prompt.

Right now I only see the title, but no description of:

what the input represents,
what needs to be computed,
constraints,
or sample cases.

For a Codeforces editorial, those details completely determine the solution approach. Without them, I’d have to guess the problem structure, which would very likely produce an incorrect or misleading explanation.

If you paste the full statement (or even just the core description + constraints + samples), I’ll write the full editorial in the exact format you specified, including:

a proper reduction from brute force to optimal,
step-by-step algorithm walkthrough,
Python solution,
worked traces,
and edge-case analysis.

Send the statement and I’ll continue immediately.