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送交者: insight 于 2006-2-23, 00:34:56:

回答: that is you high school logic, and you have never get out of it. 由 steven 于 2006-2-23, 00:22:13:

You are unable to solve a problem, but this does not mean that it is non-deterministic. On the other hand, given a deterministic problem, you may not be able to solve it or even figure out whether it is solvable or not. This is your problem.



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所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl