hdu5384 AC自己主动机模板题，统计模式串在给定串中出现的个数

http://acm.hdu.edu.cn/showproblem.php?pid=5384

Problem Description

Danganronpa is a video game franchise created and developed by Spike Chunsoft, the series' name is compounded from the Japanese words for "bullet" (dangan) and "refutation" (ronpa).

Now, Stilwell is playing this game. There are n verbal
evidences, and Stilwell has m "bullets".
Stilwell will use these bullets to shoot every verbal evidence.

Verbal evidences will be described as some strings Ai,
and bullets are some strings Bj.
The damage to verbal evidence Ai from
the bullet Bj is f(Ai,Bj).

f(A,B)=∑i=1|A|−|B|+1[ A[i...i+|B|−1]=B ]

In other words, f(A,B) is
equal to the times that string B appears
as a substring in string A.
For example: f(ababa,ab)=2, f(ccccc,cc)=4

Stilwell wants to calculate the total damage of each verbal evidence Ai after
shooting all m bullets Bj,
in other words is ∑mj=1f(Ai,Bj).

 

Input

The first line of the input contains a single number T,
the number of test cases.
For each test case, the first line contains two integers n, m.
Next n lines,
each line contains a string Ai,
describing a verbal evidence.
Next m lines,
each line contains a string Bj,
describing a bullet.

T≤10
For each test case, n,m≤105, 1≤|Ai|,|Bj|≤104, ∑|Ai|≤105, ∑|Bj|≤105
For all test case, ∑|Ai|≤6∗105, ∑|Bj|≤6∗105, Ai and Bj consist
of only lowercase English letters

 

Output

For each test case, output n lines,
each line contains a integer describing the total damage of Ai from
all m bullets, ∑mj=1f(Ai,Bj).

 

Sample Input

1
5 6
orz
sto
kirigiri
danganronpa
ooooo
o
kyouko
dangan
ronpa
ooooo
ooooo

 

Sample Output

1
1
0
3
7

/**
hdu5384 AC自己主动机模板题，统计模式串在给定串中出现的个数
*/
#include<string.h>
#include<algorithm>
#include<iostream>
#include<stdio.h>
#include<queue>
using namespace std;
char str[100010][10010];
int num[100010],n,m;
struct Trie
{
    int next[10010*50][28],fail[10010*50],end[10010*50];
    int root,L;
    int newnode()
    {
        for(int i=0; i<26; i++)
        {
            next[L][i]=-1;
        }
        end[L++]=-1;
        return L-1;
    }
    void init()
    {
        L=0;
        root=newnode();
    }
    void insert(char *s)
    {
        int len=strlen(s);
        int now=root;
        for(int i=0; i<len; i++)
        {
            if(next[now][s[i]-'a']==-1)
            {
                next[now][s[i]-'a']=newnode();
            }
            now=next[now][s[i]-'a'];
        }
        if(end[now]==-1)///标记模式串出现的次数
        {
            end[now]=1;
        }
        else
        {
            end[now]++;
        }
    }
    void build()
    {
        queue<int>Q;
        fail[root]=root;
        for(int i=0; i<26; i++)
        {
            if(next[root][i]==-1)
            {
                next[root][i]=root;
            }
            else
            {
                fail[next[root][i]]=root;
                Q.push(next[root][i]);
            }
        }
        while(!Q.empty())
        {
           // printf("**\n");
            int now=Q.front();
            Q.pop();
            for(int i=0; i<26; i++)
            {
                if(next[now][i]==-1)
                    next[now][i]=next[fail[now]][i];
                else
                {
                    fail[next[now][i]]=next[fail[now]][i];
                    Q.push(next[now][i]);
                }
            }
        }
    }
    void query(char* s)
    {
        memset(num,0,sizeof(num));
        int len=strlen(s);
        int now=root;
        for(int i=0; i<len; i++)
        {
            now=next[now][s[i]-'a'];
            int temp=now;
            while(temp!=root)
            {
                if(end[temp]!=-1)///统计全部模式串出现的次数，num数组在0~m之间定能取到全部end[temp]必不大于m
                {
                    num[end[temp]]+=end[temp];
                }
                temp=fail[temp];
            }
        }
        int ans=0;
        for(int i=0; i<=m; i++)
        {
            if(num[i]>0)
                ans+=num[i];
        }
        printf("%d\n",ans);
    }
} ac;
char s[10005];
int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d%d",&n,&m);
        for(int i=0; i<n; i++)
        {
            scanf("%s",str[i]);
        }
        ac.init();
        for(int i=0; i<m; i++)
        {
            scanf("%s",s);
            ac.insert(s);
        }
        ac.build();
        //printf("**\n");
        for(int i=0; i<n; i++)
        {
            ac.query(str[i]);
        }
    }
    return 0;
}