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那位高人有解决这题的办法？1923这题用什么好的办法解啊？我试图用枚举的方法，先画n条平行直线，在一个个数可能出现交点的情况，但是十分繁琐!那位高人有解决这题的办法？谢谢！！ Followed by: Post your reply here: |
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