CF 104128B - Ropeway

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

Solution

I’m missing the actual problem statement for Codeforces 104128B - Ropeway, and without it I can’t produce a correct editorial.

This kind of CF ID looks like a contest-specific or gym problem, and the solution structure depends heavily on the exact rules (graph vs simulation vs greedy, etc.). If I try to reconstruct it, there’s a real risk of giving you a completely wrong algorithm and misleading explanation.

Please paste the full statement (or even just input/output + description), and I’ll immediately write the full editorial in the exact format you requested, including:

clean restatement in my own words
brute force → optimized transition
step-by-step algorithm walkthrough
full Python solution
worked traces, complexity, and edge cases

Once you send it, I’ll produce the complete write-up in one pass.