#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
vector<int> a(n + 5, 0), b(n + 5, 0), dp((1 << 10), 1), pos((1 << 10), -1), par(n + 5, -1);
for(int i = 1; i <= n; ++i){
cin >> a[i];
}
for(int i = 1; i <= n; ++i){
cin >> b[i];
}
pair<int, int> mx_dp = {0, -1};
for(int i = 1; i <= n; ++i){
pair<int, int> mx = {0, -1};
for(int j = 0; j < (1 << 8); ++j){
if(__builtin_popcount(a[i] & j) == b[i] && pos[j] != -1){
mx = max(mx, {dp[j] + 1, pos[j]});
}
}
dp[a[i]] = max(dp[a[i]], mx.first);
par[i] = mx.second;
mx_dp = max(mx_dp, {dp[a[i]], i});
pos[a[i]] = i;
}
vector<int> ans;
int i = mx_dp.second;
while(i != -1){
ans.push_back(i);
i = par[i];
}
cout << (int) ans.size() << "\n";
reverse(ans.begin(), ans.end());
for(auto it : ans) cout << it << " ";
return 0;
}
