#include <bits/stdc++.h>
using namespace std;
const int N = 1e5;
const int B = 8;
vector<int> and_mp[1 << B][B]; // and_mp[x][i] -> all numbers y s.t. x & y has i set bits
int n, a[N], k[N], dp[N], ind[1 << B], prv[N];
// ind[i] = current latest j s.t. a[j] = i
// prv[i] = optimal index to include right before i
int main() {
// preprocess
for (int i = 0; i < (1 << B); i++) {
for (int j = 0; j < (1 << B); j++) {
and_mp[i][__builtin_popcount(i & j)].push_back(j);
}
}
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
for (int i = 0; i < n; i++) cin >> k[i];
fill(dp, dp + n, 1);
fill(ind, ind + (1 << B), -1);
ind[a[0]] = 0;
int ans = 1, best_i = 0;
for (int i = 1; i < n; i++) {
int best_prv = i;
for (int prev : and_mp[a[i]][k[i]]) {
if (ind[prev] >= 0 && dp[ind[prev]] + 1 > dp[i]) {
best_prv = ind[prev];
dp[i] = dp[ind[prev]] + 1;
}
}
prv[i] = best_prv;
if (dp[i] > ans) {
ans = dp[i];
best_i = i;
}
ind[a[i]] = i;
}
cout << ans << endl;
vector<int> res;
while (prv[best_i] != best_i) {
res.push_back(best_i);
best_i = prv[best_i];
}
res.push_back(best_i);
reverse(res.begin(), res.end());
for (int x : res) cout << x + 1 << " ";
}
