#include <bits/stdc++.h>
using namespace std;
template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl
using ll = long long;
const int maxn = 1e6 + 5;
int n;
int a[maxn];
int k[maxn];
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n;
for (int i=0; i<n; i++) {
cin>>a[i];
}
for (int i=0; i<n; i++) {
cin>>k[i];
}
vector<int> ans;
for (int mask=1; mask<1<<n; mask++) {
vector<int> v;
for (int i=0; i<n; i++) {
if (mask>>i&1) v.push_back(i);
}
bool ok = true;
for (int i=1; i<(int)v.size(); i++) {
if (__builtin_popcount(a[v[i-1]]&a[v[i]]) == k[v[i]]) {
} else {
ok = false;
}
}
if (ok) {
if (v.size()>ans.size()) ans=v;
}
}
sort(ans.begin(),ans.end());
cout<<ans.size()<<endl;
for (int i: ans) cout<<i+1<<" ";
cout<<endl;
return 0;
}
