#include<bits/stdc++.h>
using namespace std;
const int MAXN=1e5+6;
const int MAXA=(1<<20);
const int MAXHALF=(1<<10);
int n;
int a[MAXN];
int k[MAXN];
pair<int,int> maxlen[MAXHALF][MAXHALF][22];
int cntbits[MAXHALF][MAXHALF];
pair<int,int> dp[MAXN];
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin>>n;
for(int i=1;i<=n;++i)cin>>a[i];
for(int i=1;i<=n;++i)cin>>k[i];
for(int i1=0;i1<MAXHALF;++i1)
{
for(int i2=0;i2<MAXHALF;++i2)
{
cntbits[i1][i2]=__builtin_popcount(i1&i2);
}
}
pair<int,int> maxdp;
maxdp={0,0};
for(int i=1;i<=n;++i)
{
dp[i]={1,0};
int a1=a[i]/MAXHALF,a2=a[i]%MAXHALF;
for(int j=0;j<MAXHALF;++j)
{
int t=cntbits[a1][j];
if(t>k[i])continue;
dp[i]=max(dp[i],{maxlen[j][a2][k[i]-t].first+1,maxlen[j][a2][k[i]-t].second});
}
for(int j=0;j<MAXHALF;++j)
{
maxlen[a1][j][cntbits[j][a2]]=max(maxlen[a1][j][cntbits[j][a2]],{dp[i].first,i});
}
maxdp=max(maxdp,{dp[i].first,i});
}
cout<<maxdp.first<<'\n';
vector<int>v;
v.push_back(maxdp.second);
while(dp[v.back()].second!=0)
{
v.push_back(dp[v.back()].second);
}
reverse(v.begin(),v.end());
for(auto xd:v)
{
cout<<xd<<" ";
}
cout<<'\n';
return 0;
}
