#include <iostream>
#include <fstream>
#include <string.h>
#include <algorithm>

using namespace std;

ifstream in("strmatch.in");
ofstream out("strmatch.out");

char s1[2000003];
char s2[2000003];
int val[1003];
char *p1 = s1;
char *p2 = s2;
int cnt;

int main() {

    in.getline(s1, 2000003);
    in.getline(s2, 2000003);

    string A(p1);
    string B(p2);

    int len1 = strlen(s1);
    int len2 = strlen(s2);

    int c = B.find(A, 0);
    while(c != string::npos) {

        if(cnt < 1001)
            val[cnt++] = c;
        else
            cnt++;

        c = B.find(A, c+1);

    }

    out << cnt << '\n';
    for(int i = 0; i < cnt; i++) {
        if(i == 1000)
            break;
        out << val[i] << " ";
    }

    return 0;
}