#include<bits/stdc++.h>
using namespace std;
ifstream g("strmatch.in");
ofstream f("strmatch.out");
int p,nr,i;
string a,b;
vector<int> v;
int main(){
    g>>a>>b;
    p=b.find(a), nr=0;
    while(p!=string::npos){
        nr++;
        if(nr<=1000)v.push_back(p);
        p=b.find(a,p+1);
    }
    f<<nr<<"\n";
    for(;i<min(nr,1000);i++) f<<v[i]<<" ";
}