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.