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Re:我想问下NEGATE a b 这个操作是怎么操作?操作后a b之间变成什么了?

Posted by contest_clarificator at 2007-06-03 13:47:33 on Problem 3237
In Reply To:我想问下NEGATE a b 这个操作是怎么操作?操作后a b之间变成什么了? Posted by:sunny_fable at 2007-06-03 13:39:51 
NEGATE a b 
means change the weight of every edge from v to -v ,on the path from a to b
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