#include <iostream>
#include <fstream>
using namespace std;
char a[2000000],b[2000000];
int b_val,a_val,al,V[2000000],j,i,ap;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
int main()
{
    f>>a>>b;
    al=strlen(a);
    for (i=0;i<al-1;i++)
    {
        a_val+=a[i]+0;
        b_val+=b[i]+0;

    }
    a_val+=a[al-1]+0;
    for (i=al;i<strlen(b);i++)
    {
        b_val+=b[i]+0;
        if (b_val==a_val)
        {
            for (j=0;j<al;j++)
            {
                if (a[j]!=b[j+i-al]) break;
                if (j==al-1) {V[ap]=i-al; ap++;}
            }
        }
        b_val-=b[i-al]+0;
    }
    g<<ap<<'\n';
    for (i=0;i<min(ap,1000);i++) g<<V[i]<<" ";

}