#include<stdio.h>
#include<string.h>
char s[2000005],s2[2000005];
int main()
{
    freopen("strmatch.in","r",stdin);
    freopen("strmatch.out","w",stdout);
    char *p;
    unsigned n=0,i,v[1005];
gets(s2);
gets(s);
p=strstr(s,s2);
while(p!=NULL)
{
    n++;
    if(n<1001)
    v[n]=p-s;
    p=strstr(p+1,s2);
}
printf("%u\n",n);
if(n>1000)
n=1000;
for(i=1;i<=n;i++)
printf("%u ",v[i]);

    return 0;
}