The precise definition here is that a problem X is NP-hard, if there is an NP-complete problem Y , such that Y is reducible to X in polynomial ... ... <看更多>
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The precise definition here is that a problem X is NP-hard, if there is an NP-complete problem Y , such that Y is reducible to X in polynomial ... ... <看更多>
This is an answer to the original question before it was edited (Can a problem move from NP to P). No, if a problem is NP-complete then it is not solvable ... ... <看更多>