/* 
 * File:   main.cpp
 * Author: bitone
 *
 * Created on August 18, 2010, 11:34 AM
 */
#include <string>
#include <vector>
#include <fstream>
#include <cstdlib>
#include <iterator>
#define MAX_N 2000011

using namespace std;

/*
 *
 */
typedef signed int sint;
sint f[MAX_N];
vector< sint > v;
string pattern, sstring;
void F( void )
{
    sint Sp=pattern.size(), i, j;
    for( i=2; i <= Sp; ++i )
    {
        for( j=f[i-1]; j && pattern[j] != pattern[i-1]; j=f[j] );
        if( pattern[j] == pattern[i-1] )
            ++j;
        f[i]=j;
    }
}
void KMP( void )
{
    F();
    sint Ss=sstring.size(), Sp=pattern.size(), i, j;
    for( i=j=0; i < Ss; )
    {
        if( sstring[i] == pattern[j] )
        {
            ++i, ++j;
            if( j == Sp )
                v.push_back(i-Sp);
        }
        else if( j )
                j=f[j];
            else ++i;
    }
}
int main( void )
{
    ifstream in( "strmatch.in" );
    in>>pattern>>sstring;
    KMP();
    ofstream out( "strmatch.out" );
    out<<v.size()<<'\n';
    copy( v.begin(), v.begin()+( v.size() <= 1000 ? v.size() : 1000 ), ostream_iterator<sint>( out, " ") );
    out<<'\n';
    return EXIT_SUCCESS;
}