#include <bits/stdc++.h>
#define pb push_back
#define LINE "--------------------\n"
#define ALL(x) x.begin(),x.end()
using namespace std;
const int N = 1e5+5;
const int M = (1<<20)+5;
int n;
int nums[N], bits[N], par[N], dpPos[N], dpVal[M], pos[M];
int bitCnt(int a) {
return bitset <20>(a).count();
}
int dfs(int& num, int leftBits, int tarBits, int pow, int pre) {
// cout << num << " " << pre << ' ' << pow << ' ' << leftBits << ' ' << tarBits << '\n';
if (tarBits == 0 && pow < 0) {
// cout << num << ": " << pre << "\n";
return pre;
}
if (leftBits < tarBits || pow < 0) return 0;
int a = dfs(num, leftBits-(num&(1<<pow) ? 1 : 0), tarBits, pow-1, pre);
int b = 0;
if (num & (1<<pow)) b = dfs(num, leftBits-1, tarBits-1, pow-1, pre+(1<<pow));
else b = dfs(num, leftBits, tarBits, pow-1, pre+(1<<pow));
if (dpVal[b] > dpVal[a]) a = b;
return a;
}
signed main() {
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n;
int ans = 1;
for (int i = 1; i <= n; i++) cin >> nums[i];
for (int i = 1; i <= n; i++) cin >> bits[i];
for (int i = 1; i <= n; i++) {
// cout << LINE;
int curPar = 0, x = bitCnt(nums[i]);
// if (x < bits[i]) continue;
int res = dfs(nums[i], x, bits[i], 10, 0);
dpPos[i] = dpVal[res]+1;
par[i] = pos[res];
dpVal[nums[i]] = dpPos[i];
pos[nums[i]] = i;
// for (int j = 1; j <= 5; j++) cout << dpVal[j] << " \n"[j==5];
}
for (int i = 2; i <= n; i++)
if (dpPos[i] > dpPos[ans]) ans = i;
vector <int> tmp;
while(ans != 0) {
tmp.pb(ans);
ans = par[ans];
}
cout << tmp.size() << "\n";
while(!tmp.empty()) {
cout << tmp.back() << ' ';
tmp.pop_back();
}
cout << "\n";
}
