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pku 3255 Roadblocks

这道题不同于一般的次短路径问题，因为允许边重走。看似更为复杂了，其实是更简单了一些。方法为先用Heap+Dijkstra求出1和N的单源最短路径，把无向边看成两个有向边，然后枚举每单向条...

四月 14th, 2009 | Tags: , , , | Category: Pku, USACO | Leave a comment

我叫 Grover Morgan

做USACO月赛遇到一件巨囧的事。今天中午受到Rob的信

Dear CmYkRgB123 CmYkRgB123 [ID: cmykrgb1]:

Your recent entry (as cmykrgb1) to the USACO programming contest has
been rejected because the name that you used to r...

十月 22nd, 2008 | Tags: , , , , , | Category: Life and Thought | 6 comments

USACO FEB07 Silver Silver Lilypad Pond 银色莲花池

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十月 9th, 2008 | Tags: , , , | Category: Olympiad Informatics, USACO | Leave a comment

USACO FEB07 Bronze Bronze Lilypad Pond 青铜莲花池

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十月 9th, 2008 | Tags: , , , | Category: Olympiad Informatics, USACO | Leave a comment

USACO MAR07 Silver Monthly Expense 月度花费

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十月 9th, 2008 | Tags: , | Category: Olympiad Informatics, USACO | Leave a comment

USACO MAR07 Silver Balanced Lineup 平衡的阵容

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十月 9th, 2008 | Tags: , , , | Category: Olympiad Informatics, USACO | Leave a comment

USACO MAR07 Silver Cow Traffic 奶牛交通

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十月 7th, 2008 | Tags: , , | Category: Olympiad Informatics, USACO | Leave a comment
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