Actually it's not 40, I think these are, 75 alright. So the answer is 75 and the number of calls is 1.7 million.

实际上不是4，我觉得，好了，所以答案是5,调用次数是1百70万次。

计算机科学及编程导论课程节选 : 麻省理工公开课

That's a good thing. And instead of 17 million calls, I have 1800 calls.

真好，我们只调用了1800次函数,而不是一开始的1百70万次。

计算机科学及编程导论课程节选 : 麻省理工公开课

And then we hand you 140,000 English words in the form of a big text file much like our aspiring pre-med students in recent months, and we challenge you to implement the fastest spellchecker possible.

然后我给你一个包含1万4千单词的超大文本,就跟前段时间那位,有抱负的医学预科班的学生一样,我想让你在最短时间内实现拼音检查。

计算机科学课程节选 : 哈佛公开课