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FT! SPFA47ms bellman-fod16ms

Posted by hmetal at 2009-12-06 17:52:42 on Problem 1275 
莫非是因为我SPFA用STL？还是判负圈过慢？
SPFA我还没能想到更好的判负圈的方法，就循环超过|V|才跳出，听说要用拓扑排序？
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