#include <fstream>
#include <vector>
using namespace std;

// https://infoarena.ro/problema/strmatch

ifstream f("strmatch.in");
ofstream g("strmatch.out");

int main(void) {

    string a, b;
    f >> a >> b;
    const int sza = a.size(), szb = b.size();
    int t = 0;
    vector<int> res;

    for (int i = 0; i < szb - sza; i++) {
        if (b[i] == a[0]) {
            string tmp = b.substr(i, sza);
            if (tmp == a) {
                t++;
                res.push_back(i);
            }
        }
    }

    g << t << endl;
    for (int r : res) g << r << " ";

    return 0;
}