TikTok Reel Impact (TikTok AMS)

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Problem Overview

  • Compute the total impact score by taking the k-th highest reel impact from the initial set, then after each day’s new feature is added, and summing these values.
  • Input: initialReelImpacts (m), newReelImpacts (n), and k; Output: long total impact. Constraints: 1≤m,n≤1e5, 1≤k≤m, values ≤1e9.
  • Domain: TikTok creators boosting reel popularity as features roll out daily.
  • Source: TikTok interviews; a practical coding interview interview question problem.

Example

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