#include <string>
#include <fstream>
#include <vector>

using namespace std;

string s1, s2;
vector<int> sol;

int main()
{
    std::ifstream fin("strmatch.in");
    fin >> s1 >> s2;
    fin.close();

    size_t position = s2.find(s1);
    while ( position != string::npos && position <= s2.size() - s1.size() )
    {
        sol.push_back(position);
        position = s2.find(s1, position + 1);
    }

    std::ofstream fout("strmatch.out");
    fout << sol.size() << '\n';
    int max_print = (sol.size() > 1000 ? 1000 : sol.size());
    for ( int i = 1; i <= max_print; i++)
    {
        fout << sol[i] << ' ';
    }
    fout << '\n';
    fout.close();
    return 0;
}