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DP方向不同,一个TLE,一个31MS,晕死。。。。。。。。

Posted by dongshanluo at 2007-05-15 21:03:14 on Problem 1661
开始做的时候从最高处开始做,一直往下求解到地面为止,贡献了6个TLE,
现在改成了从地面开始往高处DP,结果31MS就过了!

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