#include <fstream>
#include <cstring>
#define nmax 2000050
#define orice 661
#define mod 666013
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");

char A[nmax], B[nmax], x;
int hasha, hashb, La, Lb, nrAparitii, v[nmax], p = 1;
void Hashing(char x[nmax], int &Hash){
    for(int i = 0; i < Lb; ++i){
        Hash = (Hash * orice % mod + (unsigned)x[i]) % mod;
    }
}
void Hash2(int a){
    hasha = ((hasha - (unsigned)A[a - 1] * p % mod + mod) * orice + (unsigned)A[a + Lb - 1] + mod)  % mod;
}

int main()
{int i;
    f>>B>>A;
    La = strlen(A);
    Lb = strlen(B);
    for(i = 1; i < Lb; ++ i)
        p = (p * orice) % mod;
    Hashing(B, hashb);
    Hashing(A, hasha);
    if(hasha == hashb)
            v[++nrAparitii] = 0;
    x = La - Lb;
    for(i = 1; i <= x; ++i){
        Hash2(i);
       // g<<hasha<<' '<<hashb<<'\n';
        if(hasha == hashb){
            v[++nrAparitii] = i;
        }
    }
    g<<nrAparitii<<'\n';
    for(i = 1; i <= nrAparitii; ++i)
        g<<v[i]<<' ';
    g<<'\n';
    return 0;
}