#include <fstream>
#include <cstring>
 
using namespace std;
char A[2000010], B[2000010], *p;
int P[2000010], n, m, L, nr, i, S[1010];
 
ifstream fin ("strmatch.in");
ofstream fout("strmatch.out");
 
 
int main()
{
    fin >> A;
    fin >> B;
    p = strstr (B,A);
    while(p != NULL)
    {
        nr++;
        if(nr <= 1000)
        {
            S[nr] = p - B;
        }
        p = strstr(p+1, A);
    }
    fout<<nr<<"\n";
    if (nr > 1000)
        nr = 1000;
    for (i=1;i<=nr;i++)
        fout<<S[i]<<" ";
 
    return 0;
}