//KMP
#include <bits/stdc++.h>

using namespace std;

ifstream f("strmatch.in");
ofstream g("strmatch.out");

const int SIZE = 2000005;
char s1[SIZE],s2[SIZE],*p;
int sol[SIZE],cnt;

int main()
{

    f>>s1>>s2;
    p=strstr(s2,s1);
    while(p)
    {
        cnt++;
        sol[cnt]=p-s2;
        p=strstr(p+1,s1);
    }
    g<<cnt<<'\n';
    for(int i=1;i<=cnt;i++)g<<sol[i]<<' ';
}