#include<fstream>
#include<string.h>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
int nr,i,v[2000001];;
char s1[2000001],s2[2000001],*p,*q;
int main()
{
	f>>s1>>s2;
	p=s2;
	while(q=strstr(p,s1)){
		v[++nr]=q-s2;
		p = q+1;
	}
	g<<nr<<"\n";
	for(i=1;i<=nr;i++)
		g<<v[i]<<" ";
	return 0;
}