#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;


char a[2000001],b[2000001];
int s[2000001];


void Citire ()
{
    ifstream f ("strmatch.in");
    f>>a;
    f>>b;
}


void Prefix_Sufix ()
{
    int i=1,j=0;
    while (i<strlen(a))
    {
        if (a[j]==a[i])
        {
            s[i]=j+1;
            j++;
        }
        else
        {
            while (j!=0)
            {
                j=s[j-1];
                goto nextI;
            }
        }
        i++;
nextI:
        ;
    }
}


void KMP ()
{
    ofstream g("strmatch.out");
    int i=0,j=0,nra=0,k=0;
    int p[20000];
    while (i<strlen(b))
    {
        if (b[i]==a[j])
        {
            i++;
            j++;
            if (j==strlen(a))
            {
                nra++;
                p[k++]=i-strlen(a);
                i=i-strlen(a)+1;
                j=0;
            }
        }
        else
        {
            if (j!=0)
                j=s[j-1];
            if (b[i]==a[j])
            {
                i++;
                j++;
                if (j==strlen(a))
                {
                    nra++;
                    p[k++]=1;
                }
            }
            else
                i++;
        }

    }
    g<<nra<<endl;
    for (int i=0;i<k;i++)
        g<<p[i]<<" ";
}



int main()
{
    Citire ();
    Prefix_Sufix();
    KMP ();
    return 0;
}