#include<fstream>
#include<cstring>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
char a[2000005],b[2000005];
int n,m,i,j,nr,c[2000005],con;
bool ok;
int main()
{
    f.getline(a,2000005);
    n=strlen(a);
    f.getline(b,2000005);
    m=strlen(b);
    for(i=0;i<=m-n;i++)
    if(b[i]==a[0])
    {
        ok=1;
        con=1;
        j=i+1;
        while(ok==1&&con<n)
        {
            if(a[con]!=b[j])
            ok=0;
            con++;
            j++;
        }
        if(ok==1)
        {
            nr++;
            c[nr]=i;
        }
    }
    g<<nr<<"\n";
    for(i=1;i<=min(nr,1000);i++)
    g<<c[i]<<" ";
    return 0;
}