#include <bits/stdc++.h>
#ifdef DEBUG
#include "debug.hpp"
#endif
using namespace std;
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
#define traverse(c, it) for(auto it = (c).begin(); it != (c).end(); ++it)
#define rep(i, N) for(int i = 0; i < (N); ++i)
#define rrep(i, N) for(int i = (N) - 1; i >= 0; --i)
#define rep1(i, N) for(int i = 1; i <= (N); ++i)
#define rep2(i, s, e) for(int i = (s); i <= (e); ++i)
#ifdef DEBUG
#define debug(x...) { \
++dbg::depth; \
string dbg_vals = dbg::to_string(x); \
--dbg::depth; \
dbg::fprint(__func__, __LINE__, #x, dbg_vals); \
}
#define light_debug(x) { \
dbg::light = true; \
dbg::dout << __func__ << ":" << __LINE__; \
dbg::dout << " " << #x << " = " << x << endl; \
dbg::light = false; \
}
#else
#define debug(x...) 42
#define light_debug(x) 42
#endif
using ll = long long;
template<typename T>
inline T& ckmin(T& a, T b) { return a = a > b ? b : a; }
template<typename T>
inline T& ckmax(T& a, T b) { return a = a < b ? b : a; }
constexpr int B = 10;
array<array<array<pair<int, int>, B + 1>, 1 << B>, 1 << B> dp;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n; cin >> n;
vector<int> a(n), k(n); rep(i, n) cin >> a[i]; rep(i, n) cin >> k[i];
debug(n, a, k);
for(auto& x: dp) for(auto& y: x) for(auto& z: y) z = {0, -1};
vector<int> len(n, 1), pre(n, -1);
rep(i, n) {
debug(i);
rep(x, 1 << B) {
int req = k[i] - __builtin_popcount(a[i] & x);
int tail = a[i] & ((1 << B) - 1);
if(req >= 0 && req <= B && ~dp[x][tail][req].first) {
if(len[i] < 1 + dp[x][tail][req].first)
tie(len[i], pre[i]) = dp[x][tail][req], ++len[i];
}
}
rep(tail, 1 << B) {
ckmax(dp[a[i] >> B][tail][__builtin_popcount(a[i] & tail)], {len[i], i});
}
}
debug(len, pre);
int ans_i = int(max_element(all(len)) - len.begin());
cout << len[ans_i] << '\n';
vector<int> ans; ans.reserve(len[ans_i]);
for(; ~ans_i; ans_i = pre[ans_i]) ans.push_back(ans_i);
rrep(i, int(ans.size())) cout << ans[i] + 1 << ' ';
cout << '\n';
#ifdef DEBUG
dbg::dout << "\nExecution time: "
<< clock() * 1000 / CLOCKS_PER_SEC
<< "ms" << endl;
#endif
return 0;
}
