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

void mk_z(const string& str, vector<int>& v){
    const int n = str.size();
    v.resize(n, 0);

    int centru = 0, right = 0;
    for(int i = 1; i < n; ++i){
        if(i >= right){
            int j = 0;
            for( ; str[j] == str[i+j]; ++j);
            v[i] = j;
            centru = i;
            right = i+j-1;
        }
        else{
            const int val_omoloaga = v[i-centru];
            if(i+val_omoloaga-1 < right){
                v[i] = val_omoloaga;
            }
            else{
                int j = right-i+1;
                for( ; str[j] == str[i+j]; ++j);
                v[i] = j;
                centru = i;
                right = i+j-1;
            }
        }
    }
}

void do_strmatch(const string& caut, const string& str, int& nr, vector<int>& poz){
    string s = caut;
    s.push_back('#');
    s.append(str);

    vector<int> z;
    mk_z(s, z);

    for(int i = 0, j = caut.size()+1; j < z.size(); ++i, ++j){
        if(z[j] == caut.size()){
            ++nr;
            if(poz.size() < 1000){
                poz.push_back(i);
            }
        }
    }
}

int main(){
    ifstream f("strmatch.in");
    ofstream g("strmatch.out");
    string caut, str;
    f >> caut >> str;

    int nr = 0;
    vector<int> poz;

    do_strmatch(caut, str, nr, poz);

    g << nr << '\n';
    for(int i = 0; i < poz.size(); ++i){
        g << poz[i] << ' ';
    }
}