hdoj 1686 Oulipo

#include <bits/stdc++.h>

using namespace std;
const int maxn = 1e6+10;

int n,Next[maxn];
char mo[maxn],str[maxn];

int main(){
scanf("%d",&n);
while(n--){
memset(Next,-1,sizeof(Next));
scanf("%s%s",mo,str);
int i = 0,j = -1,len = strlen(mo);
while(i < len){
if(j == -1||mo[i] == mo[j]) Next[++i] = ++j;
else j = Next[j];
}
int ans = 0,len1 = strlen(str);
i = j = 0;
while(i < len1){
if(j == -1||str[i] == mo[j]) ++i,++j;
else j = Next[j];
if(j == len) ans++;
}
printf("%d\n",ans);
}
return 0;
}