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#include <bits/stdc++.h>
#define mod 1000000009
#define int long long
using namespace std;
ifstream f ("strmatch.in");
ofstream g ("strmatch.out");
const int nmax=2e6+3;
int pwp,cod,n,t,usu;
char s1[nmax],s[nmax];
vector <int> sol;
main()
{
f>>(s1+1);
f>>(s+1);
n=strlen(s1+1);
t=strlen(s+1);
for(int i=1;i<=n;++i)
{
cod=(cod*26+(s1[i]-'A'))%mod;
while(cod<0) cod+=mod;
}
pwp=1;
for(int i=1;i<n;++i) pwp=pwp*26%mod;
for(int i=1;i<=t;++i)
{
if(i<=n) usu=(usu*26+(s[i]-'A'))%mod;
else usu=((usu-(s[i-n]-'A')*pwp)*26+(s[i]-'A'))%mod;
while(usu<0) usu+=mod;
if(i>=n&&usu==cod)
{
sol.push_back(i-n+1);
if(sol.size()==1000) break;
}
}
g<<sol.size()<<'\n';
for(int i=0;i<sol.size();++i) g<<sol[i]-1<<' ';
}