#include<fstream>
#include<cstring>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
int n,m,urm[256],b[1001];
char p[256],a[1001];
void urmatorul(char *p)
{
    int k=-1,x;
    urm[0]=0;
    for(x=1;x<=m;x++)
    {
        while(k>0&&p[k+1]!=p[x])
        k=urm[k];
        if(p[k+1]==p[x])
        k++;
        urm[x]=k;
    }
}
int main()
{
    int i,x=-1,nr=0;
    f.getline(p,256);
    f.getline(a,1001);
    n=strlen(a);
    m=strlen(p);
    urmatorul(p);
    for(i=0;i<n;i++)
    {
        while(x>0&&p[x+1]!=a[i])
        x=urm[x];
        if(p[x+1]==a[i])
        x++;
        if(x==m-1)
        {
            nr++;
            b[nr]=i-m+1;
            x=urm[x];
        }
    }
    g<<nr<<"\n";
    for(i=1;i<=nr;i++)
    g<<b[i]<<" ";
    return 0;
}