#include <bits/stdc++.h>
using namespace std;
const int nx=1e5+5;
int n, v[nx], k[nx];
pair<int, int> t, vl[nx], dp[nx];
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n;
for (int i=1; i<=n; i++) cin>>v[i], dp[i]={1, i};
for (int i=1; i<=n; i++) cin>>k[i];
for (int i=0; i<512; i++) vl[i]={-1, -1};
for (int i=1; i<=n; i++)
{
for (int j=0; j<512; j++)
{
if (vl[j].first==-1) continue;
if (__builtin_popcount(v[i]&j)==k[i]) dp[i]=max(dp[i], {vl[j].first+1, vl[j].second});
}
vl[v[i]]=max(vl[v[i]], {dp[i].first, i});
t=max(t, {dp[i].first, i});
}
cout<<t.first<<'\n';
vector<int> res;
while (dp[t.second].second!=t.second) res.push_back(t.second), t.second=dp[t.second].second;
res.push_back(t.second);
reverse(res.begin(), res.end());
for (auto x:res) cout<<x<<' ';
}
/*
4
1 2 3 4
10 0 1 0
5
5 3 5 3 5
10 1 20 1 20
*/
