#include<fstream>
#include<string.h>
using namespace std;
fstream f1,f2;
char A[2000002];
char B[2000002];
int P,i,hA,hB,M,N,k,x[2000002];
int nextHash(int v, char x, char y)
{
	v=((v-(P*x)%100019+100019)*73+y)%100019;
	return v;
}

int main()
{
	f1.open("strmatch.in",ios::in);
	f2.open("strmatch.out",ios::out);
	f1>>A>>B;
	M=strlen(A);
	N=strlen(B);
	hA=0; hB=0; P=1;
	//initializarea hashurilor
	for (i=0;i<M;i++)
	{
		hA=(hA*73+A[i])%100019;
		hB=(hB*73+B[i])%100019;
		if (i)P=(P*73)%100019;
	}
	k=0;
	if (hA==hB){x[k]=0;k++;}
	for (i=M;i<N;i++)
	{
		hB=nextHash(hB,B[i-M],B[i]);
		if (hA==hB){x[k]=i-M+1;k++;}
	}
	f2<<k<<"\n";
	for (i=0;i<k && i<1000;i++) f2<<x[i]<<" ";
	f2.close();
	f1.close();
	return 0;
}