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The post highlights a Dynamic Programming formulation from the GLM-5.2 paper's appendix that resembles a LeetCode problem, tying into the debate about LeetCode's relevance sparked by Alisa Liu's hiring at OpenAI.
IndexShare is a technique in the GLM-5.2 report that shares a single indexer across multiple layers in sparse attention, reducing FLOPs by 2.9x at 1M context by avoiding redundant top-key selections per layer.