hdu 1686 Oulipo(简单KMP)只不过比赛的时候用了string.一直超时，改成char就一遍AC，纠结。。。

1、http://acm.hdu.edu.cn/showproblem.php?pid=1686

2、题目大意：

这道题目太纠结了，就是一道直接用KMP模板的题目，比赛的时候居然第一次想成做for循环次的KMP，超时了，后来知道只能用一次KMP了，结果用的string 一直超时，后来改成char居然一遍AC，还得好好熟悉算法

题目是给出两个字符串a,b,求a在b中出现多少次

3、题目：

Oulipo

Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 3999    Accepted Submission(s): 1578

Problem Description

The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter 'e'. He was a member of the Oulipo group. A quote from the book:

Tout avait Pair normal, mais tout s’affirmait faux. Tout avait Fair normal, d’abord, puis surgissait l’inhumain, l’affolant. Il aurait voulu savoir où s’articulait l’association qui l’unissait au roman : stir son tapis, assaillant à tout instant son imagination, l’intuition d’un tabou, la vision d’un mal obscur, d’un quoi vacant, d’un non-dit : la vision, l’avision d’un oubli commandant tout, où s’abolissait la raison : tout avait l’air normal mais…

Perec would probably have scored high (or rather, low) in the following contest. People are asked to write a perhaps even meaningful text on some subject with as few occurrences of a given “word” as possible. Our task is to provide the jury with a program that counts these occurrences, in order to obtain a ranking of the competitors. These competitors often write very long texts with nonsense meaning; a sequence of 500,000 consecutive 'T's is not unusual. And they never use spaces.

So we want to quickly find out how often a word, i.e., a given string, occurs in a text. More formally: given the alphabet {'A', 'B', 'C', …, 'Z'} and two finite strings over that alphabet, a word W and a text T, count the number of occurrences of W in T. All the consecutive characters of W must exactly match consecutive characters of T. Occurrences may overlap.

 

Input

The first line of the input file contains a single number: the number of test cases to follow. Each test case has the following format:

One line with the word W, a string over {'A', 'B', 'C', …, 'Z'}, with 1 ≤ |W| ≤ 10,000 (here |W| denotes the length of the string W).
One line with the text T, a string over {'A', 'B', 'C', …, 'Z'}, with |W| ≤ |T| ≤ 1,000,000.

 

Output

For every test case in the input file, the output should contain a single number, on a single line: the number of occurrences of the word W in the text T.

 

Sample Input

3 BAPC BAPC AZA AZAZAZA VERDI AVERDXIVYERDIAN

 

Sample Output

1 3 0

 

Source

华东区大学生程序设计邀请赛_热身赛

 

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4、ＡＣ代码：

#include
#include
#include
#include
#include
using namespace std;
char s[1000005];
char a[10005];
char b[1000005];
int f[10005];
void getFail(char p[], int *f)
{
    int m=strlen(p);
    f[0]=f[1]=0;
    for(int i=1; i





附string 超时代码：

#include
#include
#include
#include
using namespace std;
char s[1000005];
string a;
string b;
int f[10005];
void getFail(string p, int *f)
{
    int m=p.length();
    f[0]=f[1]=0;
    for(int i=1; i>n;
    while(n--)
    {
       cin>>a;
        cin>>b;
        int la=a.length();
        int lb=b.length();
        int sum=find(b,a,f);
        //printf("%d\n",sum);
        cout<