#include <bits/stdc++.h>
using namespace std;
const int M = 1024;
int n;
int main(){
cin >> n;
vector <int> a(n+1), k(n+1), b(M+1);
for(int i = 0; i <= M; i++){
b[i] = __builtin_popcount(i);
}
for(int i = 1; i <= n; i++){
cin >> a[i];
}
for(int i = 1; i <= n; i++){
cin >> k[i];
}
vector <vector <vector <int>>> dp(M+1, vector <vector <int>> (M+1, vector <int> (12,0)));
vector <int> ans(n+1,0);
int an = 1;
for(int i = 1; i <= n; i++){
int pref_a = (a[i]/M), suf_a = (a[i]-(pref_a*M));
if(suf_a < 0) continue;
for(int j = 0; j <= M; j++){
int x = (k[i] - b[pref_a&j]);
if((x < 0) or (x > 10)) continue;
// cout << j << ' ' << suf_a << ' ' << x << '\n';
ans[i] = max(ans[dp[j][suf_a][x]]+1,ans[i]);
}
for(int j = 0; j <= M; j++){
if(ans[dp[pref_a][j][b[j&suf_a]]] < ans[i]) dp[pref_a][j][b[j&suf_a]] = i;
}
an = max(an, ans[i]);
}
cout << an << '\n';
vector <int> c;
int ind = 0;
for(int i = n; i >= 1; i--){
if(ans[i] == an){
ind = i;
// break;
}
}
c.push_back(ind);
for(int i = ind-1; i >= 1; i--){
if(ans[i] == an-1 and b[a[i]&a[ind]] == k[ind]){
ind = i;
an--;
c.push_back(i);
}
}
sort(c.begin(), c.end());
for(auto i : c){
cout << i << " ";
}
return 0;
}
