Binary Searchmedium45 minSecurity Engineer

Anomaly Minimum Feasible Throughput

Security Engineer signal: binary search on answer + monotonic predicate in a login anomaly detector context. This is a ProdMatch-owned security engineer drill, framed as a April 2026 Stripe Account Trust simulation, not a copied platform question.

Company context

Stripe · Account Trust

Freshness

April 2026

Product surface

ProdMatch interview simulation based on product-team patterns; not a claim of a real company question.

Question

For login anomaly detector, choose the minimum processing rate so all sessions finish before deadline. Each worker can process rate units per minute, rounded up per item.

Input

Work item sizes and deadline minutes.

Output

Minimum integer rate.

Constraints

1 <= items.length <= 200000
1 <= item size <= 1e9
Deadline is at least items.length.

Concepts

attack graphs
policy tries
anomaly detection
binary search on answer
monotonic predicate

sizes [3,6,7,11], deadline=8 -> 4

Approach

Try framing your own approach first. The 30 seconds you think before peeking is where learning happens.

Clean Solution

Reveal the approach first.

How well did you understand?

Your rating tunes when this problem shows up again.

Common Mistakes

Use low + (high - low) // 2 to avoid overflow.
The predicate must be monotonic or binary search is invalid.

Next Similar Problems

Attack Minimum Feasible Throughputmedium Policy Minimum Feasible Throughputmedium Secrets Minimum Feasible Throughputhard