(complexity) | NP-hard - A set or property of computational search problems. A problem is NP-hard if solving it in polynomial time would make it possible to solve all problems in class
NP in polynomial time.Some NP-hard problems are also in NP (these are called "NP-complete"), some are not. If you could reduce an NP problem to an NP-hard problem and then solve it in polynomial time, you could solve all NP problems. See also computational complexity. |

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