/**
* author : Lăng Trọng Đạt
* created: 25-12-2023
**/
#include <bits/stdc++.h>
using namespace std;
#ifndef LANG_DAT
#define db(...) ;
#endif // LANG_DAT
#define int int64_t
#define mp make_pair
#define f first
#define s second
#define pb push_back
#define all(v) (v).begin(), (v).end()
using pii = pair<int, int>;
const int MAXN = 1e5 + 5;
const int B = 8;
int g[MAXN], k[MAXN], dp[MAXN], p[MAXN];
int bc[1 << B][1 << B];
// pii dp1[1 << 9]; // dp1[i][x]: LBS ending in x
int n, res = 0, res1 = 0;
int last = 0;
void sub1() {
memset(dp, -1, sizeof(dp));
for (int i = 0; i < n; i++) {
for (int j = 0; j < i; j++) {
if (__builtin_popcount(g[i] & g[j]) == k[i] && dp[j] + 1 > dp[i]) {
// db(i, j, __builtin_popcount(g[i] & g[j]), k[i])
dp[i] = dp[j] + 1;
p[i] = j;
}
}
db(i, dp[i], g[i])
if (dp[i] > res1) {
res1 = dp[i];
last = i;
}
if (dp[i] == -1) {
dp[i] = 1;
p[i] = i;
}
}
// db(res, last)
}
void sub3() {
// memset(dp1, -1, sizeof(dp1));
vector<pii> dp1(1 << B, {-1, -1});
for (int i = 0; i < n; i++) {
// p[i] = i;
// dp1[g[i]].f = 1;
// dp1[g[i]].s = -1;
// p[i] = i;
}
// for (int i = 0; i< n; i++) {
// if (dp1[g[i]].s == -1)
// dp1[g[i]].s = i;
// }
for (int i = 0; i < n; i++) {
bool id = i & 1;
for (int j = 0; j < (1 << 8); j++) {
if (bc[g[i]][j] == k[i] && dp1[j].f + 1 > dp1[g[i]].f && dp1[j].f != -1) {
// db(g[i], j, dp1[j], dp1[g[i]].f)
dp1[g[i]].f = dp1[j].f + 1;
p[i] = dp1[j].s;
dp1[g[i]].s = i;
}
}
// db(i, g[i], dp1[g[i]].f)
if (dp1[g[i]].f > res) {
db(dp1[g[i]].f, res, i)
res = dp1[g[i]].f;
last = i;
}
if (dp1[g[i]].f == -1) {
dp1[g[i]] = {1, i};
p[g[i]] = i;
}
}
// db(dp1[g[4993]], p[4993], g[4993], k[4993])
db(res)
}
int32_t main() {
cin.tie(0)->sync_with_stdio(0);
if (fopen("hi.inp", "r")) {
freopen("hi.inp", "r", stdin);
freopen("hi.out", "w", stdout);
}
// preprocess
for (int i = 1; i < (1 << B); i++)
for (int j = 1; j < (1 << B); j++)
bc[i][j] = __builtin_popcount(i & j);
std::cin >> n;
for (int i = 0; i < n; i++) {
std::cin >> g[i];
db(g[i], bitset<4>(g[i]))
}
for (int i = 0; i < n; i++) {
std::cin >> k[i];
}
if (n <= 5000) {
sub1();
} else {
sub3();
}
db(last, g[last], p[last])
vector<int> ans = {last};
while (last != p[last]) {
db(last, p[last])
last = p[last];
ans.pb(last);
}
// db(ans.size(), res, res1, ans)
cout << ans.size() << "\n";
reverse(all(ans));
for (int i : ans) {
cout << i + 1 << " ";
}
for (int i = (int)ans.size() - 1; i >= 0; i--) {
}
// for (int i = 1; i < ans.size(); i++) {
// if (__builtin_popcount(g[ans[i]] & g[ans[i - 1]]) != k[ans[i]]) {
// db(ans[i], g[ans[i]], g[ans[i] - 1], __builtin_popcount(g[ans[i]] & g[ans[i - 1]]), k[i])
// }
// }
// db(ans.size(), res)
}
