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A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
一个问题如果在计算机上可以快速解决,那么它属于P类问题;如果一个解可以快速验证,那么它属于NP类问题。
The real journey is the one that changes you.
过去是一个异国;他们在那里做事的方式不同。
La única derrota es no haber intentado.
When you want something, all the universe conspires in helping you to achieve it.
Modern quarrying must marry the wisdom of geology with the innovation of engineering.
Go for it now. The future is promised to no one.