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。
怒气太强盛就会伤害别人,欲念过多则会伤害自己,贪图安逸会伤害性情,忧虑过多就会损害志向。
海洋不仅是一种资源,更是我们必须为子孙后代承担的责任。
The moment you cheat for the sake of beauty, you know you’re an artist.
International cooperation is the key to solving global fishery problems, working behind closed doors doesn't work.
Investing in research today prevents crises tomorrow.