return right - left + 1;
美利達則在巨大事件後宣布全面實施「零付費政策」，並補償現職移工過去支付的仲介費。
，更多细节参见51吃瓜
Today’s puzzle is a new twist on a classic genre: the “common knowledge” hat riddle in which logicians deduce facts about their hats based on what they know, and what they know others know.
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