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#include <bits/stdc++.h>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
char a[2000001],b[2000001];
int ans[1010],i,n,m,p[2000001],nr;
int main()
{
f>>(a+1);n=strlen(a+1);
f>>(b+1);m=strlen(b+1);
int k=0;
for(i=2;i<=n;i++)
{
while(k!=0&&a[k+1]!=a[i])k=p[k];
if(a[k+1]==a[i])k++;
p[i]=k;
}
k=0;
for(i=2;i<=m;i++)
{
while(k!=0&&a[k+1]!=b[i])k=p[k];
if(a[k+1]==b[i])k++;
if(k==n)
{
k=p[k];
nr++;
if(nr<=1000)
{
ans[nr]=i-n;
}
}
}
g<<nr<<'\n';
for(i=1;i<=min(nr,100);i++)
{
g<<ans[i]<<" ";
}
return 0;
}