剪花布条 HDU - 2087

#define  _CRT_SECURE_NO_WARNINGS
#include<iostream>

#include<algorithm>
#include<string>
#include<cstdio>
#include<cmath>
#include<stack>
#include<cstring>
#include<functional>
#include<queue>
#include<set>
#include<map>
#define LL long long
#define lp(s,i,n) for(int i = s;i < n;i++)
#define lpd(s,i,n) for(int i = s;i <= n;i++)
#define clr(a,b) memset(a,b,sizeof(a))
#define scn(a)  scanf("%I64d",&a)
#define prf(a)  printf("%d\n",a)
using namespace std;
const int N = 100020;
const int MAXE = 20020;

const int INF = 0x3f3f3f3f;
const double pi = 2 * asin(1);
int cnt,pp;
int n, m;
int a[1000020], b[1000020];
int nex[1000020];
void get_next(string p, int *x)
{
    int i, j;
    i = 0;
    j = -1; 
    nex[0] = -1;
    while (i < p.size())
    {
        if (j == -1 || p[i] == p[j])
        {
            i++;
            j++;
            //next[i] = j;

            if (p[i] != p[j])
                nex[i] = j;
            else
                nex[i] = nex[j];

            //cout << "next[i] = " << j << endl;
        }
        else
        {
            j = nex[j];
            //cout << "i = " << i << " j = " << j << endl;
        }
    }
}

int index_kmp(string p, string x)
{
    int i = -1;
    int j = -1;
    int len1 = p.size();
    int len2= x.size();
    
    get_next(x, nex);
    while (i < len1 && j < len2)
    {
        if (j == -1 || p[i] == x[j])
        {
            i++;
            j++;
        }
        else
        {
            j = nex[j];
            //cout << "i = " << i << " j = " << j << endl;
        }
        if (j == len2)
        {
            cnt++;
            
            j =0;

        }
    }
    return cnt;
    
}







int main(void)
{
    int t;
    
    string a, b;
    
    while (cin>>a)
    {
        if (a[0] == '#')break;
        cnt = 0;
        cin >> b;
        //cin >> n >> m;
        //cin >> b >> a;
        int ans = index_kmp(a, b);
        cout << ans << endl;
    }

    system("pause");

}