Software Engineer signal: binary search on answer + monotonic predicate in a checkout reliability context. This is a ProdMatch-owned software engineer drill, framed as a March 2026 Ola Payments Core simulation, not a copied platform question.
Company context
Ola · Payments Core
Freshness
March 2026
Product surface
checkout reliability
ProdMatch interview simulation based on product-team patterns; not a claim of a real company question.
For checkout reliability, choose the minimum processing rate so all events finish before deadline. Each worker can process rate units per minute, rounded up per item.
Input
Output
Constraints
Concepts
sizes [3,6,7,11], deadline=8 -> 4
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