#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream in("strmatch.in");
ofstream out("strmatch.out");
vector <int> sol;
int main()
{
    string a, b;
    in >> a >> b;
    b = "#" + b;
    int poz = 0;
    while(poz != -1)
    {
        poz = b.find(a, poz + 1);
        if(poz != -1)
            sol.push_back(poz - 1);
    }
    out << sol.size() << "\n";
    for(unsigned int i = 0; i <= min(1000U, sol.size() - 1); i++)
        out << sol[i] << " ";
    out << "\n";
    return 0;
}