#include <fstream>
#include <iostream>
#include <string>
using namespace std;
string a,b;
int p[2000003],nr;

int main()
{
    ifstream in("strmatch.in");
    in>>a>>b;
    in.close();
    int pos=-1;
    pos=b.find(a,pos+1);
        if(pos!=string::npos)
        p[nr++]=pos;
    while(pos!=string::npos)
    {
        pos=b.find(a,pos+1);
        if(pos!=string::npos)
        p[nr++]=pos;
    }
    ofstream out("strmatch.out");
    out<<nr<<'\n';
    if(nr<1000)
    for(int i=0;i<nr;i++)
    out<<p[i]<<' ';
    else
    for(int i=0;i<=999;i++)
    out<<p[i]<<' ';
    out<<'\n';
    out.close();
    return 0;
}