HDU1251

<!-- lang: cpp -->
#include<iostream>
using namespace std;
struct zidian
{
       zidian *cha[26];
       int num;
       zidian (){int i;for (i=0;i<26;i++)cha[i]=NULL;num=0;}
};
zidian *head;
int find(char word[])
{
    int i;
    zidian *p=head;
    for (i=0;i<strlen(word);i++)
    {
        if (p->cha[word[i]-'a']==NULL)
           return 0;
        p=p->cha[word[i]-'a'];
    }
    return p->num;
}
void insert(char word[])
{
     zidian *p=head,*s;
     int i;
     for (i=0;i<strlen(word);i++)
     {
         if (p->cha[word[i]-'a']==NULL)
         {
            s=new zidian;
            p->cha[word[i]-'a']=s;
         }
         p=p->cha[word[i]-'a'];
         p->num++;
     }
}
int main()
{
    head=new zidian;
    char word[1000];
    while (gets(word) && word[0]-'a'>=0)
          insert(word);
    while (cin>>word)
          cout<<find(word)<<endl;
    return 0;
}