// 易错点2：用Math.ceil/Math.floor取整 → 破坏时间比较逻辑，必须精确计算
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Жители Санкт-Петербурга устроили «крысогон»17:52
As of publication, the letter has over 450 signatures, almost 400 of which come from Google employees and the rest from OpenAI. Currently, roughly 50 percent of all participants have chosen to attach their names to the cause, with the rest remaining anonymous. All are verified as current employees of these companies. The original organizers of the letter aren’t Google or OpenAI employees; they say are unaffiliated with any AI company, political party or advocacy group.