#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <stdlib.h>

using namespace std;

vector<int> prefixFunc(string s) {
    auto n = (int) s.length();
    vector<int> pi(n);
    for (int i=1; i<n; ++i) {
        int j = pi[i-1];
        while (j > 0 && s[i] != s[j])
            j = pi[j-1];
        if (s[i] == s[j])  ++j;
        pi[i] = j;
    }
    return pi;
}


vector<int> getSubstrings(const string &string1, const string &sub1) {
    int stringl = string1.length();
    int subl = sub1.length();
    vector<int> result;
    vector<int> borders = prefixFunc(sub1+"$"+string1);
    int count = 0;
    result.push_back(0);
    for (int i = 0; i < stringl; i++)
    {
        if (borders[subl + i + 1] == subl) {
            result.push_back(i-subl+1);
            count++;
        }
    }
    result[0] = count;

    return result;
}

int main()
{
	string t;
	string p;
	vector<int> res;

	ifstream fin;
	fin.open("input.txt");
	if (fin.is_open())
	{
		getline(fin, t);
		getline(fin, p);
		fin.close();
	}

	res = getSubstrings(t, p);

	fstream fout;
	fout.open("output.txt", ios::out);
	fout << res.size() << "\n";
	for (std::vector<int>::const_iterator i = res.begin(); i != res.end(); ++i)
		fout << *i << "\n";
	fout.close();

	return 0;
}