Minimum Chunks Required (Akuna Shang Hai )

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Problem Overview

  • Determine the minimum number of 2^n-packet contiguous chunks still needed to complete a document upload from a partial state.
  • Input: totalPackets (long) and uploadedChunks as [start, end] pairs; Output: int minimum remaining chunks.
  • Constraints: 1 ≤ totalPackets < 1e18; up to 1e5 non-overlapping uploaded ranges; 1-based inclusive indices.
  • Context: financial services documents uploaded to a compliance system using chunked packets.
  • Akuna Shang Hai coding interview problem and common interview question.

Example

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