#include <stdio.h>
#include <iostream>
#include <fstream>
//#include <string>
//#include <vector>
using namespace std;

//string a, b;
//vector <int> rez;
char a[2000001], b[2000001], rez[2000001];

long num, nr, p1 = 97, win1 = 15921, p2 = 17, win2 = 21443, alen, blen, b_hash1, a_hash1, rez_size, def_power1, power1, power2, def_power2, a_hash2, b_hash2;

int main ()
{
	//freopen ("strmatch.in", "rt", stdin);
	//freopen ("strmatch.out", "wt", stdout);
	ifstream f("strmatch.in");
	ofstream g("strmatch.out");

	cin.sync_with_stdio(false);
	f>>a;
	f>>b;

	a_hash1 = 0;
	b_hash1 = 0;
	alen = strlen(a);//a.size();
	blen = strlen(b);//b.size();
	power1 = 1;
	for (long i = alen - 1; i >= 0; --i)
	{
		a_hash1 += a[i] * power1;
		b_hash1 += b[i] * power1;
		def_power1 = power1;
		power1 *= p1;
		a_hash1 %= win1;
		b_hash1 %= win1;
		power1 %= win1;
	}

	a_hash2 = 0;
	b_hash2 = 0;
	power2 = 1;
	for (long i = alen - 1; i >= 0; --i)
	{
		a_hash2 += a[i] * power2;
		b_hash2 += b[i] * power2;
		def_power2 = power2;
		power2 *= p2;
		a_hash2 %= win2;
		b_hash2 %= win2;
		power2 %= win2;
	}

	for (long i = alen; i < blen; ++i)
	{
		if (a_hash1 == b_hash1 && a_hash2 == b_hash2)
		{
			rez[i - alen] = 1, ++num;
		}

		b_hash1 += (win1 - (def_power1 * b[i - alen] % win1));
		b_hash1 %= win1;
		if (b_hash1 < 0) 
			b_hash1 += win1;
		b_hash1 *= p1;
		b_hash1 += b[i];
		b_hash1 %= win1;

		b_hash2 += (win2 - (def_power2 * b[i - alen] % win2));
		b_hash2 %= win2;
		if (b_hash2 < 0) 
			b_hash2 += win2;
		b_hash2 *= p2;
		b_hash2 += b[i];
		b_hash2 %= win2;
	}

	if (a_hash1 == b_hash1 && a_hash2 == b_hash2)
	{
		rez[i - alen] = 1, ++num;
	}

//	printf("%ld\n", rez.size());
	g<<num<<endl;
	//rez.size();
	for (long i = 0; i < blen && nr < 1000; ++i)
//		printf("%ld ", rez[i] - alen);
		if (rez[i])
			g<<i<<" ", ++nr;
	g<<endl;
	return 0;
}