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求证!关于spfa负环的判断

Posted by zhby1990 at 2011-03-17 17:23:50 on Problem 1364
此题节点数至少是n+1个,节点编号从0到n。
如果再加上超级源点是n+2个节点。判断负环准确点,应该是大于n还是n+1?



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