#include <bits/stdc++.h>
#include <fstream>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define endl '\n'
#define mod 1000000007
#define INF 1000000000
#define INF2 2000000000
#define fi first
#define se second
using namespace std;
double const EPS = 1e-14;
const int P = 1007;
typedef long long ll;
using namespace __gnu_pbds;
typedef long long ll;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; // find_by_order, order_of_key
int cnt(int val) {
int tot = 0;
for(int i = 0; i < 21; i++) {
if((val&(1<<i)) > 0) tot++;
}
return tot;
}
int main()
{
ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
int n; cin >> n; int arr[n+1], k[n+1], dp[n+1] = {}, last[n+1] = {};
for(int i = 1; i <= n; i++) dp[i] = 1;
for(int i = 1; i <= n; i++) cin >> arr[i];
for(int i = 1; i <= n; i++) cin >> k[i];
for(int i = 1; i <= n; i++) {
for(int j = i-1; j >= 1; j--) {
if(cnt(arr[i]&arr[j]) == k[i]) {
if(dp[i] < dp[j]+1) {
dp[i] = dp[j]+1;
last[i] = j;
}
}
}
}
pair<int,int> sol = {};
for(int i = 1; i <= n; i++) {
if(sol.fi < dp[i]) {
sol.fi = dp[i];
sol.se = i;
}
}
cout << sol.fi << endl;
vector<int> order;
while(sol.se != 0) {
order.push_back(sol.se);
sol.se = last[sol.se];
}
for(int i = order.size()-1; i >= 0; i--) {
cout << order[i] << ' ';
}
cout << endl;
}
/*7 1 4
3 3 3 4 4 2 1
2 4
6 7
4 7
1 4
2
0
2
2*/
