ac自动机模板题——hdu1277

                                    全文检索

 我们大家经常用google检索信息,但是检索信息的程序是很困难编写的;现在请你编写一个简单的全文检索程序。 
问题的描述是这样的:给定一个信息流文件,信息完全有数字组成,数字个数不超过60000个,但也不少于60个;再给定一个关键字集合,其中关键字个数不超过10000个,每个关键字的信息数字不超过60个,但也不少于5个;两个不同的关键字的前4个数字是不相同的;由于流文件太长,已经把它分成多行;请你编写一个程序检索出有那些关键字在文件中出现过。 

Input

第一行是两个整数M,N;M表示数字信息的行数,N表示关键字的个数;接着是M行信息数字,然后是一个空行;再接着是N行关键字;每个关键字的形式是:[Key No. 1] 84336606737854833158。 

Output

输出只有一行,如果检索到有关键字出现,则依次输出,但不能重复,中间有空格,形式如:Found key: [Key No. 9] [Key No. 5];如果没找到,则输出形如:No key can be found !。 

Sample Input

20 10
646371829920732613433350295911348731863560763634906583816269
637943246892596447991938395877747771811648872332524287543417
420073458038799863383943942530626367011418831418830378814827
679789991249141417051280978492595526784382732523080941390128
848936060512743730770176538411912533308591624872304820548423
057714962038959390276719431970894771269272915078424294911604
285668850536322870175463184619212279227080486085232196545993
274120348544992476883699966392847818898765000210113407285843
826588950728649155284642040381621412034311030525211673826615
398392584951483398200573382259746978916038978673319211750951
759887080899375947416778162964542298155439321112519055818097
642777682095251801728347934613082147096788006630252328830397
651057159088107635467760822355648170303701893489665828841446
069075452303785944262412169703756833446978261465128188378490
310770144518810438159567647733036073099159346768788307780542
503526691711872185060586699672220882332373316019934540754940
773329948050821544112511169610221737386427076709247489217919
035158663949436676762790541915664544880091332011868983231199
331629190771638894322709719381139120258155869538381417179544
000361739177065479939154438487026200359760114591903421347697

[Key No. 1] 934134543994403697353070375063
[Key No. 2] 261985859328131064098820791211
[Key No. 3] 306654944587896551585198958148
[Key No. 4] 338705582224622197932744664740
[Key No. 5] 619212279227080486085232196545
[Key No. 6] 333721611669515948347341113196
[Key No. 7] 558413268297940936497001402385
[Key No. 8] 212078302886403292548019629313
[Key No. 9] 877747771811648872332524287543
[Key No. 10] 488616113330539801137218227609

Sample Output

Found key: [Key No. 9] [Key No. 5]

看了大半天ac自动机总算搞清楚了原理,网上的模板队列都是用数组模拟的,改了下交上去不是mle就是re,无赖参考了一下

lsx的代码找到了stl队列的模板。

#include
#include
#include
#include
#include
using namespace std;
struct node
{
    node *next[10],*fail;
    int id;
    node()
    {
        memset(next,0,sizeof(next));
        fail=NULL;
        id=0;
    }
}*head;
vector out;
char si[60005],temp[60005],pi[65];
bool flag;
void build(char *s,node *head,int id)
{
    int l=strlen(s),k;
    for(int i=0; inext[k]==NULL)//没有当前点 新建一个
            head->next[k]=new node();
        head=head->next[k];
    }
    head->id=id;
}
void build_fail(node *head)
{
    node *now,*p;
    queue q;
    head->fail=NULL;
    q.push(head);
    for(; !q.empty();)
    {
        now=q.front();
        q.pop();
        for(int i=0; i<10; ++i)
            if(now->next[i])
            {
                p=now->fail;
                for(; p&&!p->next[i]; p=p->fail);
                now->next[i]->fail=p?p->next[i]:head;
                q.push(now->next[i]);
            }
    }
}
void ac_find(char *s,node *head)
{
    int len=strlen(s);
    node *p=head;
    for(int i=0;inext[k]&&p!=head;p=p->fail);
        p=p->next[k]==NULL?head:p->next[k];
        node *tmt=p;
        for(;tmt!=head;tmt=tmt->fail)
            if(tmt->id)
            {
               out.push_back(tmt->id);
               flag=false;
            }
    }
}
int main()
{
    int n,m,l;
    while(~scanf("%d%d",&m,&n))
    {
        flag=true;
        head=new node();
        out.clear();
        for(int i=0;i

 

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