// #pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
#define now chrono::steady_clock::now().time_since_epoch().count()
#define speedup cin.tie(0)->sync_with_stdio(0)
#define bitcount __builtin_popcount
#define all(x) begin(x), end(x)
#define int long long
#define pb push_back
#define arr array
#define vc vector
using ll = long long;
template <class T> bool chmax(T &a, T b) {if (a < b) {a = b; return 1;} return 0;}
static int bits[1 << 10][1 << 10];
void solve() {
int n; cin >> n;
vc<int> a (n + 1), b (n + 1), p (n + 1);
for (int i = 1; i <= n; i++) cin >> a[i];
for (int i = 1; i <= n; i++) cin >> b[i];
int M = *max_element(all(a)) + 1;
vc<int> dp (M, -1), mp (M, 0);
for (int i = 0; i < M; i++)
for (int j = 0; j < M; j++)
bits[i][j] = bitcount(i & j);
int ans = 0, st = 0;
for (int i = 1; i <= n; i++) {
int cur = 1; p[i] = 0;
for (int v = 0; v < M; v++)
if (bits[v][a[i]] == b[i])
if (chmax(cur, dp[v] + 1)) p[i] = mp[v];
if (chmax(dp[a[i]], cur)) mp[a[i]] = i;
if (chmax(ans, cur)) st = i;
}
cout << ans << "\n";
vc<int> ord;
while (st) {
ord.pb(st);
st = p[st];
}
reverse(all(ord));
for (int x : ord) cout << x << ' ';
}
signed main() {
speedup;
solve();
}
