[poj] 3461 Oulipo

#include<cstdio>
#include<cstring>
using namespace std;
int t,la,lb,next[10010],ans;
char a[10010],b[1000010];

int main()
{
    scanf("%d",&t);
    while (t--)
    {
    memset(next,0,sizeof(next));
    scanf("%s",a+1);
    scanf("%s",b+1);
    la=strlen(a+1);
    lb=strlen(b+1);
    ans=0;
    for (int i=2,j=0;i<=la;i++)
    {
        while (j && a[j+1]!=a[i]) j=next[j];
        if (a[j+1]==a[i]) ++j;
        next[i]=j;
    }
    for (int i=1,j=0;i<=lb;i++)
    {
        while (j && a[j+1]!=b[i]) j=next[j];
        if (a[j+1]==b[i]) ++j;
        if (j==la) j=next[j],ans++;
    }
    printf("%d\n",ans);
    }
    return 0;
}