// drop-oldest: Discard old data to make room
Study finds ChatGPT Health did not recommend a hospital visit when medically necessary in more than half of cases | ChatGPT Health performance in a structured test of triage recommendations
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// 易错点3：跨度计算公式写反（stack[...]-i）→ 结果为负数，完全错误
第三十八条 县级以上人民政府应当加强行政执法监督工作保障，将行政执法监督工作所需经费列入本级预算。
Streams are iterables.