#include <bits/stdc++.h>
#define maxn 100010
using namespace std;
int dp[1 << 10][1 << 10][21];
int prv[1 << 10][1 << 10][21];
int len[maxn];
vector<int> p(maxn, -1);
const int BT = (1 << 10) - 1;
int main(){
memset(prv, -1, sizeof(prv));
int n, ans = 0, lst = -1; cin >> n;
int a[n];
for (int i = 0; i < n; i ++) cin >> a[i];
for (int i = 0; i < n; i ++){
int k; cin >> k;
len[i] = 1;
for (int j = 0; j < (1 << 10); j ++){
int K = k - __builtin_popcount(j & (a[i] << 10));
if (K < 0) continue;
if (len[i] < 1 + dp[j][BT & a[i]][K]){
len[i] = dp[j][BT & a[i]][K] + 1;
p[i] = prv[j][BT & a[i]][K];
}
}
int bg = a[i] >> 10;
for (int j = 0; j < (1 << 10); j ++){
int K = __builtin_popcount(a[i] & j);
if (dp[bg][j][K] < len[i]){
dp[bg][j][K] = len[i];
prv[bg][j][K] = i;
}
}
ans = max(ans, len[i]);
if (ans == len[i]) lst = i;
}
cout << ans << endl;
vector<int> res;
while(lst != -1){
res.push_back(lst);
lst = p[lst];
}
for (int i = ans - 1; i >= 0; i --) cout << res[i] + 1 << " ";
}
/*
5
5 3 5 3 5
10 1 20 1 20
*/
