#include<stdio.h>
 #include<string.h>
 #include<stdlib.h>
 #define MAXN 2000005
  char buffer[MAXN],*s1,*s2;
  long long i=0,j=0,k=0,find[MAXN],N;
  int main() {
 	 
     freopen("strmatch.in","r",stdin);
 	 freopen("strmatch.out","w",stdout); 
 	 scanf("%s",buffer);
 	 s1=strdup(buffer);
 	 scanf("%s",buffer);
 	 s2=strdup(buffer);
 	 N=strlen(s1);
 	 for(i=0;i<=strlen(s2)-strlen(s1);i++)
 	          if(strncmp(s1,s2+i,N)==0)
			  						  find[k++]=i;
	printf("%lld\n",k);
	for(i=0;i<k%1000;i++)
	 printf("%lld ",find[i]); 
	fclose(stdin);
	fclose(stdout);  		  						  
	return 0;
}