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#include<fstream>
using namespace std;
ifstream cin("strmatch.in");
ofstream cout("strmatch.out");
string a,b;
int c[2000001],d[1000];
int main()
{
cin>>a>>b;
int j=0,k=0,m=a.size(),n=b.size();
for(int i=2;i<m;c[i++]=k) {
for(;k&&a[k+1]!=a[i];k=c[k]);
if(a[k+1]==a[i])
++k;
}
k=0;
for(int i=2;i<n;++i) {
for(;k&&a[k+1]!=b[i];k=c[k]);
if(a[k+1]==b[i])
++k;
if(k==m-1&&a[0]==b[i-k]) {
if(j<1000)
d[j]=i-k;
++j;
}
}
cout<<j<<'\n',k=min(j,1000);
for(int i=0;i<k;cout<<d[i++]<<' ');
return 0;
}