#include <fstream>
#include <stack>
using namespace std;
int pi[2000005],res[1005];
stack<int> s;
int main()
{
    ifstream cin("strmatch.in");
    ofstream cout("strmatch.out");
    int l=0,n,m,cnt=0,r=0,c2=0,i;
    string a,b;
    cin >> a;
    cin >> b;
    n=a.size();
    m=b.size();
    for(int i=1;i<a.size();i++)
    {
        if(a[i]==a[l])
            l++;
        while(l>0 && a[l-1]!=a[i])
            l=pi[l-1];
        pi[i]=l;
    }
    l=0;
    i=0;
    while (i < m)
    {
        if (a[l] == b[i])
        {
            l++;
            i++;
        }
        if (l == n)
        {
            if(cnt<1000)
            {
                s.push(i-l);
                cnt++;
            }
            r++;
            l = pi[l - 1];
        }
        else
        {
            if (a[l] != b[i])
            {
                if (l != 0)
                    l = pi[l - 1];
                else
                    i = i + 1;
            }
        }
    }
    cout << r << '\n';
    while(s.size()>0)
    {
        res[c2]=s.top();
        c2++;
        s.pop();
    }
    for(int i=c2-1;i>=0;i--)
        cout << res[i] << " ";
    return 0;
}