#include <fstream>
#include <cstring>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
char P[2000003];
char T[2000003];
int urm[2000003];
int rez,depl[1001];
int n,m;
void urmatorul(char *P)
{
    //m = lungimea modelului
    int x,k=-1;
    urm[0]=0;
    for(x=1;x<m;++x)
    {
        while(k>0 && P[k+1]!=P[x]) k=urm[k];
        if(P[k+1]==P[x]) ++k;
        urm[x]=k;
    }
}
int main()
{
    f.getline(P,2000003); m=strlen(P);
    f.getline(T,2000003); n=strlen(T);
    urmatorul(P);
    int x=-1,i;
    for(i=0;i<n;++i)
    {
        while(x>0 && P[x+1]!=T[i]) x=urm[x];
        if(P[x+1]==T[i]) ++x;
        if(x==m-1 && rez<1000) //daca am gasit tot modelul in text
        {
            ++rez;
            depl[rez]=i-m+1;
        }
    }
    g<<rez<<'\n';
    for(i=1;i<=rez;++i) g<<depl[i]<<" ";
    return 0;
}