#include <fstream>
#include <string>
#include <vector>
#include <iostream>
using namespace std;
string s1,s2;
int nr=0;
int last=-1;
vector <int>pos;
int main()
{
    ifstream in("strmatch.in");
    ofstream out("strmatch.out");
    in>>s1>>s2;
    int sizee=s1.size();
    while((last=s2.find(s1.c_str(),last+1,sizee))!=string::npos)
        nr++,pos.push_back(last);
    out<<nr<<'\n';
    for(int i=0;i<pos.size() && i<1000;i++)
        out<<pos[i]<<" ";
    return 0;
}