理解计算的极限需要深入研究支撑算法复杂性的数学基础。

By recording your dreams and goals on paper, you set in motion the process of becoming the person you most want to be. Put your future in good hands — your own.

只有理解，才能关心；只有关心，才会帮助；只有帮助，一切才能得救。