Quick Overview

Count completed jobs in a serial pipeline where each stage has several parallel workers but the next stage waits for all current work. Practice reasoning about completion waves, unfinished batches at the deadline, large integer bounds, zero-job stages, and efficient processing across many stages.

Count Completed Jobs in a Serial Multi-Worker Pipeline

Company: Plaid

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Overview: Count completed jobs in a serial pipeline where each stage has several parallel workers but the next stage waits for all current work. Practice reasoning about completion waves, unfinished batches at the deadline, large integer bounds, zero-job stages, and efficient processing across many stages.

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