#include <bits//stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,abm,lzcnt,popcnt")
#define iloop(m, h) for (auto i = m; i != h; i += (m < h ? 1 : -1))
#define jloop(m, h) for (auto j = m; j != h; j += (m < h ? 1 : -1))
int n, a[100005], b[100005], c[100005], p[100005], m, x;
vector<int> v;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n;
iloop(0, n) cin >> a[i];
iloop(0, n) cin >> b[i];
iloop(0, n) c[i] = 1;
memset(p, -1, sizeof(p));
iloop(1, n) jloop(0, i) if (__builtin_popcount(a[j]&a[i]) == b[i] && c[i] < c[j] + 1) c[i] = c[j] + 1, p[i] = j;
m = *max_element(c, c+n);
cout << m << "\n";
iloop(0, n) if (c[i] == m) {x = i; break;}
iloop(0, m) {v.push_back(x); x = p[x];}
while (v.size()) {cout << v.back() + 1 << " "; v.pop_back();}
}
