#include<fstream>
#include<string>
#include<vector>
using namespace std;

const int B = 67;
const int P = 666013;

string a,b;
vector<int> Bp;
vector<int> poz;
int x;
void ReadData()
{
	ifstream fin("strmatch.in");
	fin>>a>>b;
}
void Baza()
{
	int k = a.length(),nr;
	Bp.push_back(1);
	for(int i=1;i<=k;i++)
	{
		nr = (Bp[i-1] * B) %P;
		Bp.push_back(nr);
	}
}
void Solve()
{
	int k = a.length();
	int hashb=0,i,hasha=0;
	
	for (i=0; i < k; i++)
	{
		hasha =(hasha + a[i] * Bp[k-1-i]) % P;
	}
	for (i=0; i < k; i++)
	{
		hashb =(hashb + b[i] * Bp[k-1-i]) % P;
	}
	int ok = 0;
	if( hasha == hashb)
	{
		for(i=0;i<k ;i++)
			if(a[i]!=b[i])
				ok = 1;
		if( ok == 0 )
		{
			poz.push_back(0);
		}
	}
	int j = b.length();
	for(i=k; i< j && poz.size() < 1000;++i)
	{
		hashb = (P + (hashb - b[i-k] * Bp[k-1]) * Bp[1] + b[i])%P;
		if( hasha == hashb)
		{
		//verific;
			ok = 0;
			for(int q = 0; q<k; ++q )
				if(a[q] != b[i-k+q+1])
					ok = 1;
			if( ok == 0 )
			{
				poz.push_back(i-k+1);
			}
		}
	}

}
//P = 10 la a 16
void Afisare()
{
	ofstream fout("strmatch.out");
	int i;
	fout<<poz.end()-poz.begin()<<"\n";
	for(i=0;i < poz.size();i++)
		fout<<poz[i]<<" ";
}
int main()
{
	ReadData();
	Baza();
	Solve();
	Afisare();
	return 0;
}