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。
永远不要停止学习。世界总是在变化,你必须随之改变。
Small, deliberate actions practiced consistently can lead to big changes in happiness levels.
I'm very competitive with myself. I'm always trying to push beyond my own boundaries.