#include <fstream>
#include <vector>
using namespace std;
string a, b;
ifstream cin("strmatch.in");
ofstream cout("strmatch.out");
long long int sub = 0;
vector<int> pos;
int main(){
    cin>>a>>b;
    for(int x = 0, y = 0, l = b.size(), sz = a.size();x<l;x++){
        if(b[x] == a[y]){
            y++;
            if(y == sz){
                sub++;
                y = 0;
                if(pos.size() < 1000)
                    pos.push_back(x - sz + 1);
            }else continue;
        }
        if(b[x] == a[0]){
            y = 1;
        }else y = 0;
    }
    cout<<sub<<'\n';
    for(int x : pos){
        cout<<x<<' ';
    }
    return 0;
}