求助，洛谷上AC，But……

#include<bits/stdc++.h>
using namespace std;
string s1,s2;
int next[1000001];
int ans[1000001];
inline void get_next()
{
    int j=0;
    for(int i=1;s2[i];i++)
    {
        while(j&&s2[j]!=s2[i]) j=next[j];
        if(s2[j]==s2[i]) j++;
        next[i+1]=j;
    }
}
inline void search()
{
    int j=0;
    for(int i=1;s1[i];i++)
    {
        while(j&&s2[j+1]!=s1[i]) j=next[j];
        if(s2[j+1]==s1[i]) j++;
        if(j+1==s2.size()) cout<<i-s2.size()+2<<endl;
    }
}
int main(){
    cin>>s1>>s2;
    get_next();
    search();
    for(int i=1;i<=s2.size();i++)
      cout<<next[i]<<' ';
}