#include <iostream>
#include <fstream>
#include <vector>
#define MAX_N 2000005
using namespace std;
char a[MAX_N], b[MAX_N];
ifstream fin ("strmatch.in");
ofstream fout ("strmatch.out");
vector <int> contor;
int main()
{
    fin.tie(0);
    ios::sync_with_stdio(false);
    fin.getline(a, MAX_N);
    fin.getline(b, MAX_N);
    int indexA=0, indexB=0, start_poz=-1;
    for (indexB=0; b[indexB]!='\0'; indexB++) {
        if (a[indexA]=='\0') {
            contor.push_back(start_poz);
            indexB=start_poz;
            start_poz=-1;
            indexA=0;
            continue;
        }
        //if (indexB==102) cout<<indexA<<endl;
        if (a[indexA]==b[indexB]) {
            if (start_poz==-1) {
                start_poz=indexB;
            }
            indexA++;
        }
        else {
            if (start_poz!=-1) {
                indexB=start_poz;
                start_poz=-1;
                indexA=0;
            }
        }
    }
    fout<<contor.size()<<'\n';
    for (auto i : contor) {
        fout<<i<<" ";
    }
    return 0;
}