#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;
ifstream f ("strmatch.in");
ofstream g ("strmatch.out");
char A[2000001],B[2000001];
int poz[2000001];
int main()
{
    f.getline(A,2000001);
    f.getline(B,2000001);
    int cnt = 1;
    char *p = strstr(B,A);
    while(p)
    {
        poz[cnt++] = p-B;
        p = strstr(p+1,A);
    }
    g <<  cnt-1<< '\n';
    for(int i = 1;i<min(cnt,1001);i++)
        g << poz[i]<< " ";
}