#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
using namespace std;
int put=1,l;
char a[2000005],sir[2000005];
vector <int> sol;
int fhash(char* start,char* finish)
{
    int rez=*start;
    put=1;
    for(char* i=start+1;i!=finish;i++)
    {
        rez=(rez*256+(*i))%101;
        put=(put*256)%101;
    }
    return rez%101;
}

void dummy(int poz)
{
    for(int i=poz,j=0;i<poz+l;i++,j++)
    {
        if(sir[i]!=a[j])
            return;
    }
    if(sol.size()<1000)
        sol.push_back(poz);
}

void potrivire()
{
    const int hashSirCautat=fhash(a,a+l);
    int hashCurent=fhash(sir,sir+l);
    for(int i=1;i<strlen(sir)-l+1;i++)
    {
        if(hashSirCautat==hashCurent)
            dummy(i-1);
        hashCurent=(((hashCurent-put*sir[i-1])%101+101)*256+sir[i+l-1])%101;
    }
}

int main()
{
    freopen("strmatch.in","r",stdin);
    freopen("strmatch.out","w",stdout);
    scanf("%s",&a);
    scanf("%s\n",&sir);
    l=strlen(a);
    potrivire();

    printf("%d\n",sol.size());
    for(int i=0;i<sol.size();i++)
        printf("%d ",sol[i]);
    return 0;
}