11 {prompt, chosen, rejected, question_id} pairs sampled from Qwen3-Coder-480B-A35B-Instruct (temperature=0.7, 4 candidates per problem) on LCB-medium-stdin problems, graded via _grade_public against public test cases.
chosen: shortest-passing teacher candidate
rejected: first-failing teacher candidate
filter: keep only problems where ≥1 candidate passes AND ≥1 fails
30 problems sampled → 11 valid… See the full description on the dataset page:
https://huggingface.co/datasets/jaivial/kronos-r3b-dpo-pairs.
