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很快搞掉他们

Posted by hawk at 2005-05-11 13:33:15 on Problem 1230
In Reply To:那些程序估计弄到数据了，这个题单输入处理就不只0.2k Posted by:frkstyc at 2005-05-11 13:28:23 
> 把墙按右边界从大到小排序，从左到右一列列的贪心，每次删除右边界最大的墙
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