#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ldb;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ldb,ldb> pdd;
#define ff(i,a,b) for(int i = a; i <= b; i++)
#define fb(i,b,a) for(int i = b; i >= a; i--)
#define trav(a,x) for(auto& a : x)
#define sz(a) (int)(a).size()
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
// os.order_of_key(k) the number of elements in the os less than k
// *os.find_by_order(k) print the k-th smallest number in os(0-based)
const int mod = 1000000007;
const int inf = 1e9 + 5;
const int mxN = 100005;
int n;
int A[mxN];
int K[mxN];
const int L = 10;
int dp[(1 << L)][(1 << L)][11];
int ko[(1 << L)][(1 << L)][11];
int par[mxN];
int main(){
cin.tie(0)->sync_with_stdio(0);
cin >> n;
ff(i,1,n)cin >> A[i];
ff(i,1,n)cin >> K[i];
int rez = 0, g = 0;
ff(i,1,n){
int ad = A[i] & ((1 << L) - 1);
int ag = A[i] >> L;
int mx = 1, gde = 0;
ff(mask,0,(1 << L) - 1){
ff(j,0,10){
if(j + __builtin_popcount(mask & ad) == K[i]){
if(dp[mask][ag][j] + 1 > mx){
mx = dp[mask][ag][j] + 1;
gde = ko[mask][ag][j];
}
}
}
}
par[i] = gde;
if(mx > rez){
rez = mx;
g = i;
}
ff(mask,0,(1 << L) - 1){
int k = __builtin_popcount(ag & mask);
if(dp[ad][mask][k] < mx){
dp[ad][mask][k] = mx;
ko[ad][mask][k] = i;
}
}
}
vector<int> res;
for(int i = g; i != 0; i = par[i])res.pb(i);
cout << sz(res) << '\n'; reverse(all(res));
for(auto c : res)cout << c << " ";
cout << '\n';
return 0;
}
/*
4
1 2 3 4
10 0 1 0
2
8 9
20 0
5
5 3 5 3 5
10 1 20 1 20
// probati bojenje sahovski
*/
