#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wunused-variable"
#pragma GCC diagnostic ignored "-Wparentheses"
#include <bits/stdc++.h>
#define all(i) (i).begin(), (i).end()
#define random random_device rd; mt19937 rng(rd())
using namespace std;
template<typename T1, typename T2>
ostream& operator << (ostream &i, pair<T1, T2> j) {
return i << j.first << ' ' << j.second;
}
template<typename T>
ostream& operator << (ostream &i, vector<T> j) {
i << '{' << j.size() << ':';
for (T ii : j) i << ' ' << ii;
return i << '}';
}
void Debug(bool _split) {}
template<typename T1, typename ...T2>
void Debug(bool _split, T1 x, T2 ...args) {
if (_split)
cerr << ", ";
cerr << x, Debug(true, args...);
}
template<typename T>
void Debuga(T *i, int n) {
cerr << '[';
for (int j = 0; j < n; ++j) cerr << i[j] << " ]"[j == n - 1];
cerr << endl;
}
#ifdef SYL
#define debug(args...) cerr << "\u001b[35mLine(" << __LINE__ << ") -> [" << #args << "] is [", Debug(false, args), cerr << "]\u001b[0m" << endl
#define debuga(i) cerr << "\u001b[35mLine(" << __LINE__ << ") -> [" << #i << "] is ", Debuga(i, sizeof(i) / sizeof(typeid(*i).name())), cerr << "\u001b[0m"
#else
#define debug(args...) void(0)
#define debuga(i) void(0)
#endif
typedef long long ll;
typedef pair<int, int> pi;
const int inf = 0x3f3f3f3f, lg = 20;
const ll mod = 1e9 + 7, INF = 0x3f3f3f3f3f3f3f3f;
signed main() {
ios::sync_with_stdio(0), cin.tie(0);
srand(time(NULL));
int n;
cin >> n;
const int K = 255;
int a[n], k[n];
for (int &i : a)
cin >> i;
for (int &i : k)
cin >> i;
int dp[n], pre[n], ans = 1, last = 0;
for (int i = 0; i < n; ++i) {
int j = i;
tie(dp[i], pre[i]) = pi(1, -1);
auto check = [&](int x) {
debug(x);
if (x < 0)
return false;
if (__builtin_popcount(a[x] & a[i]) == k[i])
tie(dp[i], pre[i]) = max(pi(dp[i], pre[i]), pi(dp[x] + 1, x));
return true;
};
for (int _i = 0; _i < K; ++_i)
if (!check(--j))
break;
while (check(j -= (rand() & K) + 1));
tie(ans, last) = max(pi(ans, last), pi(dp[i], i));
}
cout << ans << '\n';
vector<int> v;
while (~last)
v.push_back(last + 1), last = pre[last];
sort(all(v));
for (int i : v)
cout << i << ' ';
}
