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Competitive Programming with Large Reasoning Models

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arxiv 2502.06807 v2 pith:HF766WXI submitted 2025-02-03 cs.LG cs.AIcs.CL

Competitive Programming with Large Reasoning Models

classification cs.LG cs.AIcs.CL
keywords modelso1-ioireasoningdomain-specificgeneral-purposegoldhand-craftedstrategies
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show that reinforcement learning applied to large language models (LLMs) significantly boosts performance on complex coding and reasoning tasks. Additionally, we compare two general-purpose reasoning models - OpenAI o1 and an early checkpoint of o3 - with a domain-specific system, o1-ioi, which uses hand-engineered inference strategies designed for competing in the 2024 International Olympiad in Informatics (IOI). We competed live at IOI 2024 with o1-ioi and, using hand-crafted test-time strategies, placed in the 49th percentile. Under relaxed competition constraints, o1-ioi achieved a gold medal. However, when evaluating later models such as o3, we find that o3 achieves gold without hand-crafted domain-specific strategies or relaxed constraints. Our findings show that although specialized pipelines such as o1-ioi yield solid improvements, the scaled-up, general-purpose o3 model surpasses those results without relying on hand-crafted inference heuristics. Notably, o3 achieves a gold medal at the 2024 IOI and obtains a Codeforces rating on par with elite human competitors. Overall, these results indicate that scaling general-purpose reinforcement learning, rather than relying on domain-specific techniques, offers a robust path toward state-of-the-art AI in reasoning domains, such as competitive programming.

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Cited by 28 Pith papers

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  24. Scaling Test-Time Compute to Achieve IOI Gold Medal with Open-Weight Models

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  25. Towards Reasoning Era: A Survey of Long Chain-of-Thought for Reasoning Large Language Models

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  28. A Survey of Reinforcement Learning for Large Reasoning Models

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