## 【HDU 2222 Keywords Search】

### 题目链接

http://acm.hdu.edu.cn/showproblem.php?pid=2222

### Problem Description

In the modern time, Search engine came into the life of everybody like Google, Baidu, etc.
Wiskey also wants to bring this feature to his image retrieval system.
Every image have a long description, when users type some keywords to find the image, the system will match the keywords with description of image and show the image which the most keywords be matched.
To simplify the problem, giving you a description of image, and some keywords, you should tell me how many keywords will be match.

<h3Input

First line will contain one integer means how many cases will follow by.
Each case will contain two integers N means the number of keywords and N keywords follow. (N <= 10000)
Each keyword will only contains characters ‘a’-‘z’, and the length will be not longer than 50.
The last line is the description, and the length will be not longer than 1000000.

### Output

Print how many keywords are contained in the description.

1
5
she
he
say
shr
her
yasherhs

### Sample Output

3

AC自动机模板题，使用优化版写法（具体可参考：AC自动机详解

### 1 Comment

• […] 下面的代码用的是最初级的AC自动机，目的是更加直白的理解AC自动机，优化版AC自动机见：HDU 2222 Keywords Search […]

### 留下你的评论

*评论支持代码高亮<pre class="prettyprint linenums">代码</pre>