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#include <fstream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
char N[2000010],M[2000100];
int i,n,k,m,x,j,pi[2000100],rez[2000100];
int main()
{
f>>N+1;
f>>M+1;
N[0]=M[0]=255;
n=strlen(N)-1;
m=strlen(M)-1;
for(i=2;i<=n;i++)
{
while(k&&N[k+1]!=N[i])
k=pi[k];
if(N[k+1]==N[i])
k++;
pi[i]=k;
}
k=0;
for(i=1;i<=m;i++)
{
while(k&&N[k+1]!=M[i])
k=pi[k];
if(N[k+1]==M[i])
k++;
if(k==n)
{
x++;
if(x<=1000)
rez[x]=i-n;
k=pi[k];
}
}
g<<x<<'\n';
for(i=1;i<=x&&i<=1000;i++)
g<<rez[i]<<" ";
g<<'\n';
return 0;
}