#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
#define f first
#define s second
#define pii pair<int,int>
#define inf 1e9+1
#define linf 1e18+1
using namespace std;
void solve(){
int n;cin>>n;
int a[n+1];
int k[n+1];
int d[n+1],d1[n+1];
for(int i=1;i<=n;i++){
cin>>a[i];
}
for(int i=1;i<=n;i++){
cin>>k[i];
}
for(int i=1;i<=n;i++){
d[i]=1;
d1[i]=-1;
}
for(int i=2;i<=n;i++){
for(int j=i-1;j>=1;j--){
int x=a[i]&a[j];
if(__builtin_popcount(x)==k[i]){
if(d[j]+1>d[i]){
d[i]=d[j]+1;
d1[i]=j;
}
}
}
}
int mx=0,mxi;
for(int i=1;i<=n;i++){
if(d[i]>mx){
mx=d[i];
mxi=i;
}
}
vector<int>vec;
while(mxi!=-1){
vec.pb(mxi);
mxi=d1[mxi];
}
cout<<vec.size()<<"\n";
reverse(vec.begin(),vec.end());
for(int to:vec)cout<<to<<' ';
}
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);
int test=1;//cin>>test;
while(test--)solve();
}
