#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
#define MAX(a,b) ((a) > (b) ? (a) : (b))
using namespace std;
const int N = 1e5 + 10 , M = (1 << 20) + 10;
int n , a[N] , b[N] , dp[N] , cnt[M];
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n;
for(int i = 1 ; i <= n ; i++)
cin >> a[i];
for(int i = 1 ; i <= n ; i++)
cin >> b[i];
for(int i = 1 ; i < M ; i++)
cnt[i] = cnt[i >> 1] + (i & 1);
int ans = 0 , las = 0;
for(int i = 1 ; i <= n ; i++)
{
int dard = 0;
for(int j = 1 ; j < i ; j++)
dard = MAX(dard , __builtin_popcount((a[i] & a[j])) == b[i] ? dp[j] : 0);
dp[i] = dard + 1;
ans = max(ans , dp[i]);
if(dp[i] == ans)
las = i;
}
vector <int> res;
res.push_back(las);
for(int i = las - 1 ; i > 0 ; i--)
{
if(dp[i] == dp[las] - 1 && __builtin_popcount(a[las] & a[i]) == b[las])
{
res.push_back(i);
las = i;
}
}
cout << ans << '\n';
for(int i = ans - 1 ; i > -1 ; i--)
cout << res[i] << " ";
cout << '\n';
return 0;
}
