#include <stdio.h>
#include <stdlib.h>
#include <string.h>

FILE *fin, *fout;
void find(char *tofind, char *s)
{
    int nr = 0, nrp = 0, positions[100000];
    char *p = strstr(s, tofind);

    if(p == NULL)
    {
        fprintf(fout,"%d",nr);
        return;
    }

    nr++;
    positions[nrp++] = p - s;
    while((p = strstr(p+1, tofind)) != NULL)
    {
        nr++;
        positions[nrp++] = p - s;
    }

    fprintf(fout,"%d\n", nr);
    for(int i = 0; i < nrp; i++)
    {
        fprintf(fout, "%d ",positions[i]);
    }

}

int main()
{
    fin = fopen("strmatch.in","r"), fout = fopen("strmatch.out","w");
    char s1[2000000], s2[2000000];

    fgets(s1, 20000000, fin);
    int l1 = strlen(s1);
    fgets(s2, 20000000, fin);
    s1[l1-1] = '\0';

    find(s1,s2);

    fclose(fin);fclose(fout);
    return 0;
}