#include <fstream>

using namespace std;
ifstream in("strmatch.in");
ofstream out("strmatch.out");
const int NMAX=2e6+5;
long long v[NMAX];
int main()
{
    string a,b;
    int gigel=0,i;
    in>>a>>b;
    if(a.length()>b.length())
        out<<0;
    else
    {
        for(i=0;i<b.length()-a.length()+1;i++)
        {
            if(a==b.substr(i,a.length()))
            {
                gigel++;
                v[gigel]=i;
            }
        }
        out<<gigel<<'\n';
        for(i=1;i<=gigel;i++)
            out<<v[i]<<" ";
    }
    return 0;
}