#include <bits/stdc++.h>

using namespace std;

char A[2000005], B[2000005], *p;
int poz, v[1001], loc;

void Solve()
{
        p = strstr(B, A);
        while(p != NULL)
        {
                ++loc;
                if(loc < 1000)
                {
                        v[loc] = p - B;
                }
                poz = p - B;
                p = strstr(B + poz + 1, A);
        }
        printf("%d\n", loc);
        for(int i = 1; i <=min(loc, 1000); ++i) printf("%d ", v[i]);
}

int main()
{
        freopen("strmatch.in", "r", stdin);
        freopen("strmatch.out", "w", stdout);

        scanf("%s %s", A, B);
        Solve();
        return 0;
}