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大概是把一些三角形去掉?我明天做一下吧。

Posted by mostleg at 2005-08-22 21:56:28 on Problem 1291
In Reply To:http://acm.hit.edu.cn/ojs/show.php?Proid=1212&Contestid=0 您帮我看看这个题吧,做不出 Posted by:sunmoonstar_love at 2005-08-22 21:50:46


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