Assertion: problem | /r/HasProperty | np-complete
Facets:
Source sentences:
text: A brute force search solves the problem in time O(2 k ), but this may be difficult to improve upon, since the problem is NP-complete.  
text: A brute force search solves the problem in time O(2 ), but this may be difficult to improve upon, since the problem is NP-complete.