#include<fstream.h>
#include<iostream.h>
#include<string.h>
#define N 2000001
char s1[N],s2[N];
long v[1001],i,t=0,k=0,m,n,j,pi[N],q=0;
int main()
{ifstream f1("strmatch.in");
ofstream f2("strmatch.out");
f1>>s1>>s2;
m=strlen(s1);
n=strlen(s2);
pi[1]=0;
for(i=2;i<m;i++)
      {while(k>0&&s1[k+1]!=s1[i])
             k=pi[k];
      if(s1[k+1]==s1[i])
             k++;
      pi[i]=k;}
for(j=1;j<n;j++)
      {while(q>0&&s1[q+1]!=s2[j])
             q=pi[q];
      if(s1[q+1]==s2[j])
             q++;
      if(q==m-1&&s1[0]==s2[j-q])
             {if(t<1000)
                    v[t]=j-m+1;
             t++;}}
f2<<t<<endl;
if(t>=1000)
      t=1000;
for(i=0;i<t;i++)
      f2<<v[i]<<" ";
f1.close();
f2.close();
return 0;}