A miracle:an event described by those to whom it was told by men who did not see it.
高效算法的开发既是一门艺术,也是一门科学。
在远处防守不如在近处防守,把守太繁琐不如把守要塞,用常法把守不如用出奇制胜的方法,把守宽阔的地方不如把守狭窄的地方,在深处把守不如在浅处把守。