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。
all of the optimizations described above. Then at the very end of
,这一点在同城约会中也有详细论述
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Нина Ташевская (Редактор отдела «Среда обитания»)