Quick Overview

Determine ball colors after many synchronized marker moves around a circle, where marked positions flip before advancing. Derive an O(n + m) parity solution from complete laps and the remaining partial trip instead of simulating all k steps.

Advance Cyclic Ball Flips Efficiently

Company: Voleon

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Quick Answer: Determine ball colors after many synchronized marker moves around a circle, where marked positions flip before advancing. Derive an O(n + m) parity solution from complete laps and the remaining partial trip instead of simulating all k steps.

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