#include <cstdio>
#include <cstring>
#include <fstream>

char a[2000005], b[2000005];
int poz[2000005], ind;

int main() {
    freopen("strmatch.in", "r", stdin);
    freopen("strmatch.out", "w", stdout);
    scanf("%[^\n]", &a);
    scanf("\n");
    scanf("%[^\n]", &b);
    char *p = strstr(b, a);
    while (p) {
        poz[ind++] = p - b;
        p = strstr(p + 1, a);
    }
    printf("%d\n", ind);
    int stop = ind < 1000 ? ind : 1000;
    for (int i = 0; i < stop; ++i)
        printf("%d ", poz[i]);
    return 0;
}