hdu 5384 Danganronpa 2015多校联合训练赛#8 ac自动机

Danganronpa 

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)
Total Submission(s): 171    Accepted Submission(s): 83

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
  

 

Source

2015 Multi-University Training Contest 8

对所有单词建立ac自动机。然后跑一边就完事了。

#include<iostream>
#include<cstdio>
#include<queue>
#include<cstring>
using namespace std;
#define ll long long
struct Node{
    Node*ch[27],*fail;
    int mark,id;
}word[600001];//´æ×ÖµäÊ÷
int cnt;
Node *super,*root;//
Node*newNode(){//²åÈë×Ö·û´®
    memset(&word[cnt],0,sizeof(word[0]));
    word[cnt].id = cnt;
    return &word[cnt++];
}
void insert(Node*root,char*s){//½¨Ê÷
    if(*s==0){
        root->mark++;
        return;
    }
    int id = *s-'a';
    if(root->ch[id] == 0)
        root->ch[id] = newNode();
    insert(root->ch[id],s+1);
}
void build(Node*root){//
    for(int i = 0;i < 27;i++)
        super->ch[i] = root;
    root->fail = super;
    queue<Node*>Q;
    Q.push(root);
    while(!Q.empty()){
        Node* q = Q.front();
        Q.pop();
        for(int i = 0;i < 27; i++){
            if(q->ch[i] != NULL){
                Q.push(q->ch[i]);
                q->ch[i]->fail = q->fail->ch[i];
                q->ch[i]->mark += q->fail->ch[i]->mark;
            }
            else q->ch[i] = q->fail->ch[i];
        }
    }
}
ll autofind(char *s){
    ll ans = 0,id;
    Node*rt = root,*p;
    while(*s){
        id = *s - 'a';
        if(rt->ch[id] != root) rt = rt->ch[id];
        else{
            while(rt != root && rt->ch[id] == root)
            	rt = rt->fail;
        }
        ans += rt->mark;
        s++;
        if(*s == 'a'+26){
            printf("%I64d\n",ans);
            ans = 0;
        }
    }
    return ans;
}

char sen[400007];
char wor[400007];
int main(){
    int t,n,m;
    scanf("%d",&t);
    while(t--){
        cnt = 0;
        scanf("%d%d",&n,&m);
        int len = 0,lex;
        for(int i = 0;i < n; i++){
            scanf("%s",sen+len);
            lex = strlen(sen+len);
            len += lex;
            sen[len] = 'a'+26;
            len++;
        }
        sen[len] = '\0';

        super = newNode();
        root = newNode();
        for(int i = 0;i < m; i++){
            scanf("%s",wor);
            insert(root,wor);
        }
        build(root);
        ll ans = autofind(sen);

        //printf("%I64d\n",ans);
    }
    return 0;
}