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

using namespace std;

ifstream fin("strmatch.in");
ofstream fout("strmatch.out");

vector<int> rasp;
string a, b;

int main()
{
    fin >> a >> b;

    for (int i = 0; i <=b.size()-a.size(); i++)
        if (a == b.substr(i, a.size()))
            rasp.push_back(i);

    fout << rasp.size() << '\n';
    for (auto i : rasp)
        fout << i << ' ';

    return 0;
}