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#include<fstream>
using namespace std;
ifstream F("strmatch.in");
ofstream G("strmatch.out");
string a,b;
int n,m,i,k,t,v[1000],p[2000001];
int main()
{
for(F>>a>>b,n=a.size(),i=2;i<n;p[i++]=k) {
for(;k>0&&a[k+1]!=a[i];k=p[k]);
if(a[k+1]==a[i])
++k;
}
for(k=0,i=1;a[i];++i) {
for(;k>0&&a[k+1]!=b[i];k=p[k]);
if(a[k+1]==b[i])
++k;
if(k==n-1&&a[0]==b[i-n+1])
t<1000?v[t]=i-n+1:0,++t;
}
for(G<<t<<'\n',i=0;i<min(1000,t);G<<v[i++]<<' ');
return 0;
}