#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
using namespace std;
const long long oo = 1000000000000000000;
long long int sum, ans = 0, mx = 0, mn = 1000000000, num, pos;
/*
ViHHiPuh
(( `'-""``""-'` ))
)-__-_.._-__-(
/ --- (o _ o) --- \
\ .-* ( .0. ) *-. /
_'-. ,_ '=' _, .-'_
/ `;#'#'# - #'#'#;` \
\_)) -----'#'----- ((_/
# --------- #
'# ------- ------ #'
/..-'# ------- #'-.\
_\...-\'# -- #'/-.../_
((____)- '#' -(____))
cout << fixed << setprecision(6) << x;
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
freopen ( "sum.in", "r", stdin )
*/
int dp[ 21 ], p[ 3000001 ], mp[ 3000001 ], mpp[ 3000001 ];
vector <int> v;
int main () {
int n;
cin >> n;
int a[ n + 1 ];
int b[ n + 1 ];
for ( int i = 1; i <= n; i ++ ) {
cin >> a[ i ];
}
for ( int j = 1; j <= n; j ++ ) {
cin >> b[ j ];
p[ j ] = -1;
}
for ( int i = 0; i < 20; i ++ ) {
dp[ i ] = 1;
p[ 1 ] = -1;
mp[ i ] = a[ 1 ];
mpp[ i ] = 1;
}
for ( int i = 2; i <= n; i ++ ) {
for ( int j = 0; j < 20; j ++ ) {
if ( __builtin_popcount( mp[ j ] & a[ i ] ) == b[ i ] ) {
dp[ j ] ++;
p[ i ] = mpp[ j ];
mp[ j ] = a[ i ];
mpp[ j ] = i;
}
}
}
for ( int i = 0; i < 20; i ++ ) {
if ( mx < dp[ i ] ) {
pos = mpp[ i ];
mx = dp[ i ];
}
}
cout << mx << "\n";
for ( int i = pos; i != -1; i = p[ i ] ) {
v.push_back( i );
}
for ( int i = v.size() - 1; i >= 0; i -- )
cout << v[ i ] << " ";
}
