想想這三個麵 123, 124, 125。它們並沒有相交於三條線,而是一條。所以你的答案要修改一下下。
所有跟帖:
• Thank you. The # of lines should be 45-20=25. -yma16- ♂ (0 bytes) () 01/26/2018 postreply 06:09:41
• Thank you. The # of lines should be 45-20=25. -yma16- ♂ (0 bytes) () 01/26/2018 postreply 06:09:41
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