#include <bits/stdc++.h>
using namespace std;
#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<
#define INF (int)1e9
#define mod 998244353
#define maxn 100010
#define maxb 1024
#define maxp 11
int i, i1, j, k, k1, t, n, m, flag[10], a[maxn], b[maxn];
int mk1, mk2, mk3, cr, pr[maxn];
array<int, 2> dp[maxb][maxb][maxp], res;
array<int, 5> rs;
vector<int> rsv;
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
#if !ONLINE_JUDGE && !EVAL
ifstream cin("input.txt");
ofstream cout("output.txt");
#endif
cin >> n;
for (i = 1; i <= n; i++) {
cin >> a[i];
}
for (i = 1; i <= n; i++) {
cin >> b[i];
}
for (i = 1; i <= n; i++) {
mk1 = (a[i] >> 10); mk2 = a[i] - (1 << 10) * mk1;
rs = {-1, 0};
for (mk3 = 0; mk3 < (1 << 10); mk3++) {
m = b[i] - __builtin_popcount(a[i] & mk3);
if (m < 0) continue;
rs = max(rs, {dp[mk3][mk2][m][0] + 1, dp[mk3][mk2][m][1], mk3, mk2, m});
}
res = max(res, {rs[0], i});
for (mk3 = 0; mk3 < (1 << 10); mk3++) {
m = __builtin_popcount(a[i] & mk3);
if (rs[0] >= dp[mk1][mk3][m][0]) {
dp[mk1][mk3][m] = {rs[0], i}; pr[i] = rs[1];
}
}
}
cout << res[0] << nl;
cr = res[1];
while (cr != 0) {
rsv.pb(cr); cr = pr[cr];
}
reverse(rsv.begin(), rsv.end());
for (auto u : rsv) cout << u << ' ';
cout << nl;
return 0;
}
