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Q: How do I practice coding and algorithm questions?

Use PracHub's coding console to write, test, and debug your solutions in Python or JavaScript. View hints, test against sample inputs, and compare with official solutions.

Q: What difficulty level is this coding question?

This is a medium difficulty Coding & Algorithms question, commonly asked during Technical Screen rounds at Virtu.

Q: What role is this question designed for?

This question is commonly asked for Data Scientist candidates at Virtu during technical interviews.

Question

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PracHub · Accepted Answer

This question evaluates a candidate's ability to reason about optimal ordering and subset selection under a multiplicative-then-subtractive scoring rule, a classic dynamic programming and greedy-exchange-argument scenario. It tests practical algorithmic problem solving in the coding and algorithms domain, requiring proof that a particular buying order maximizes the final value. Such problems are common in technical interviews to assess whether a candidate can identify and justify a non-obvious ordering strategy.

Quick Overview

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