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

ifstream fin("strmatch.in");
ofstream fout("strmatch.out");

string a, b;
vector <int> pos;
int cnt, c;

int main(){
    fin>>a>>b;
    if(a.size()>b.size()){
        cout<<0;
    }else{
        for(int i=0;i<b.size()-a.size()+1;i++){
            string c = b.substr(i, a.size());
            if(c==a){
                cnt++;
                pos.push_back(i);
            }
        }
        fout<<cnt<<'\n';
        for(auto it: pos){
            fout<<it<<" ";
            c++;
            if(c==1000){
                break;
            }
        }
    }
    return 0;
}