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POJ1389Area of Simple Polygons 线段树+扫描线+离散化

题目链接:http://poj.org/problem?id=1389

分析:

就是扫描线。

写出来也很迷

给一篇博客:http://www.cnblogs.com/scau20110726/archive/2013/04/12/3016765.html

 

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