//
// Created by liasa on 23/11/2025.
//
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define v vector
#define lp(i, s, e) for (int i = s; i < e; ++i)
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
v<int> a(n), k(n);
lp(i, 0, n) cin >> a[i];
lp(i, 0, n) cin >> k[i];
int ans = 0, idx = 0, mx = 257;
v<v<int>> dp(n + 1, v<int>(mx, 1));
v<v<int>> pr(n + 1, v<int>(mx, -1));
set<int> in;
lp(i, 1, n + 1) {
dp[i] = dp[i - 1];
pr[i] = pr[i - 1];
ll val = a[i - 1];
for (auto it : in) {
ll dpv = dp[i - 1][it];
ll andi = __builtin_popcount(it & val);
if (andi == k[i - 1]) {
if (dp[i][val] < dpv + 1) {
dp[i][val] = dpv + 1;
pr[i][val] = it;
}
}
}
in.insert(val);
if (ans < dp[i][val]) {
ans = dp[i][val];
idx = i;
}
}
cout << ans << '\n';
ll cur_idx = idx;
ll cur_num = a[idx - 1];
v<ll> ansi;
while (cur_idx != 0 && cur_num != -1) {
ll nxt = pr[cur_idx][cur_num];
ansi.push_back(cur_num);
cur_num = nxt;
cur_idx--;
}
reverse(ansi.begin(), ansi.end());
for (auto it : ansi)
cout << it << " ";
}
