```cpp
#include <iostream>
#include <cstring>
#include <string>
using namespace std;
int n,ans=0;
string dictionary[100],text,word="",N;
bool used[100]={};
string strlwr(string str)
{
for(int i=0;i<=str.length()-1;++i)
{
str[i]=tolower(str[i]);
}
return str;
}
int main()
{
cin>>n;
for(int i=0;i<=n-1;++i)
{
cin>>dictionary[i];
dictionary[i]=strlwr(dictionary[i]);
}
getline(cin,text);
text=strlwr(text);
for(int i=0;i<=text.length()-1;++i)
{
if(text[i]>=97&&text[i]<=122)
{
word+=text[i];
}
else if(text[i]==' '||text[i]==','||text[i]=='.')
{
if(text[i-1]>=97&&text[i-1]<=122)
{
for(int j=0;j<=n-1;++j)
{
if(word==dictionary[j])
{
if(used[j]==0)
{
++ans;
word="";
used[j]=1;
break;
}
else
{
break;
}
}
}
}
if(text[i]=='.')
{
memset(used,0,sizeof(used));
}
}
}
cout<<ans<<endl;
}
```
by BurningEnderDragon @ 2020-10-29 15:29:00
（话说我名字缩写就是CYY……）
by BurningEnderDragon @ 2020-10-29 15:29:39
@[BurningEnderDragon](/user/386876) 为什么不用$char$数组呢？
by wu_wowo @ 2020-10-29 21:13:08
[我找到问题了QWQ](https://blog.csdn.net/qq_40725780/article/details/81032700)
by BurningEnderDragon @ 2020-10-29 21:24:49