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

long num, i, n, poz[2000010], npoz;
char x[2000010], y[2000010];

int main()
{
	freopen ("strmatch.in", "rt", stdin);
	freopen ("strmatch.out", "wt", stdout);

	scanf("%s\n%s", x, y);

	n = strlen(y) - 1;
	char *p = strstr(y, x);
	while (p)
	{
		num ++;
		poz[++npoz] = p - y;
		p = strstr(p + 1, x);
	}

	printf("%ld\n", num);

	for (i = 1; i <= npoz; ++i)
		printf("%ld ", poz[i]);
	printf("\n");

	return 0;
}