SinceS 2k ≤k √ 2, it suffices to showk √ 2< λ(2k+ 1)

For the odd turn 2k+ 1 , Alice wants to choose0, this is allowed iff S2k + 0≤λ(2k+ 1)

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cs.AI · 2026-05-13 · unverdicted · novelty 5.0

A 30B model trained via reverse-perplexity SFT, two-stage RL, and test-time scaling achieves gold-medal-level results on IMO 2025 and IPhO 2024/2025.

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Achieving Gold-Medal-Level Olympiad Reasoning via Simple and Unified Scaling cs.AI · 2026-05-13 · unverdicted · none · ref 48
A 30B model trained via reverse-perplexity SFT, two-stage RL, and test-time scaling achieves gold-medal-level results on IMO 2025 and IPhO 2024/2025.