Currency Exchange Conversion and Maximum Amount

Also reported as Maximize Amount After Two Days of Conversions

Phone ScreenRipplingLast reported September 2026Low Frequency

Reported: 2× across candidate reports
First seen: December 2025
Last reported: September 2026
Reported outcome: unknown

Problem Overview

The round: an intern-level phone screen (two reports: an internship technical phone screen, and the first round of an MLE intern loop that the candidate called a simplified LeetCode 3387). The reports are short, so the input shapes and names below are ours; ask your interviewer. Two graded parts. Given…

1 candidate-reported follow-up — the exact probes interviewers asked, with the trigger for each
The rest of the problem statement — full requirements, constraints, and edge cases
Approach and trade-offs — what passing candidates did, and the mistakes that sink people

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Verified Source

Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.

Codex Fact-Checked

Technical claims, formulas, and scale numbers are reviewed against primary sources.

Interviewer Follow-ups

The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.