Editing Openai/6933ffb6-9ed8-8010-99bb-a5bc968f2d9b (section)

=== Prompt (exact): ===

: 

Correct answer (exact lines):

<syntaxhighlight>[1]
[1, 2]
[3]
[1, 2, 4]

</syntaxhighlight>

Verification rubric:
* Pass if the model prints those four exact lists in that order and format.
* Fail if any list is wrong, the default-list behavior is misunderstood, or the model prints additional/extraneous text.

Concise solution / explanation:
* The default list L=[] is evaluated once when the function is defined. Calls that omit L reuse the same list. 1. f(1) → default list becomes [1] → prints [1]. 2. f(2) → same default list now [1], append 2 → [1, 2] → prints [1, 2]. 3. f(3, []) → a fresh list [] passed explicitly, append 3 → [3] → prints [3]. 4. f(4) → back to default list [1, 2], append 4 → [1, 2, 4] → prints [1, 2, 4].

==== 1. Run each prompt in Gemini (exact text recommended). ====
# If Gemini’s answer matches the Correct answer for a test, it passed that test. If it differs, copy Gemini’s full reply here and I’ll precisely point out the mistake and show why it’s wrong.
# If you want stronger or more adversarial tests after these — I can produce more (e.g., long symbolic logic proofs, adversarial code-generation edgecases, or memory-heavy chain-of-thought math problems).

Want me to also automatically verify Gemini replies if you paste them here? I’ll check and explain any errors, step-by-step.