Thinking Step 2: 推理第一个人。如果他不想要，他会直接说“不”（因为只要有一个不要，全称命题为假）。他说“不知道”，说明他自己想要，但他不确定后面两个人想不想要。
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，更多细节参见heLLoword翻译官方下载
Samsung Galaxy S26 Ultra vs. S25 Ultra: I compared both models, here's who should upgrade
N-Convex Algorithm
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// ... 还有一个方向相反的光，更多细节参见WPS下载最新地址
현직 검사, 전 연인 신체 몰래 촬영 의혹…경찰 수사 착수