Problem Understanding & Clarification
0–10"Do they actually know what we're solving?" Top candidates restate the problem, nail down inputs/outputs, and surface edge cases before writing a single line of code.
Good signal
Clarifying questions up front
Pins down input ranges, output shape, constraints, and edge cases before coding.
Restates in their own words
Plays the problem back to confirm understanding.
Surfaces assumptions explicitly
"I'm assuming the array fits in memory — let me know if not."
Bad signal
Starts coding on first read
No clarification, visible misreading of the problem later.
Silent assumptions
Builds for one shape of input without checking.
Asks only when stuck
Clarifies mid-implementation when it's already costly.
Common pitfalls
- ·Skipping clarification on "easy-looking" problems — that's exactly where misreads hide.
- ·Asking clarifying questions but not listening to the answer.
›What the AI grader actually checks
9-10 = Asked sharp clarifying questions about inputs, outputs, constraints, and edge cases BEFORE coding; restated assumptions. 7-8 = Asked meaningful clarifying questions up front. 5-6 = Some clarification but incomplete; started coding with unverified assumptions. 3-4 = Minimal clarification; visible misunderstandings. 0-2 = No clarification; coded from a misreading.