#include <fstream>
#include <cstring>
using namespace std;
int n,m,i,nr[1010],j,ap,ok,k;
char v[2000001],w[2000001];
ifstream fin ("strmatch.in");
ofstream fout ("strmatch.out");

int main (){

    fin>>v;
    fin>>w;
    n = strlen (v);
    m = strlen (w);
/*    for (i=0;i<n;i++)
        fout<<v[i];
    fout<<"\n";
    for (i=0;i<m;i++)
        fout<<w[i];
*/
    k = 0;
    for (i=0;i<m;i++){
        if (w[i] == v[k]){
            k++;
            if (k == n){
                ap++;
                if (ap <= 1000)
                    nr[ap] = i-n+1;
                k = 0;
                i -= n;
                i++;
            }
        }
        else
            k = 0;
    }
    fout<<ap<<"\n";
    if (ap > 1000)
        ap = 1000;
    for (i=1;i<=ap;i++)
        fout<<nr[i]<<" ";
    return 0;
}