#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
using namespace std;
const int half = 10;
const int maxn = 1e5 + 2;
int n;
int a[maxn], k[maxn];
int l[maxn], r[maxn];
int trace[maxn],arr[maxn];
int bc[1<<half][1<<half];
pii dp[1<<half][1<<half][half + 1];
void solve() {
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i];
for (int i = 1; i <= n; i++) cin >> k[i];
memset(dp,-1,sizeof(dp));
for (int i = 0; i < (1<<half); i++) {
for (int j = 0; j < (1<<half); j++) {
bc[i][j] = __builtin_popcount(i & j);
}
}
int ans = 0, pos = 0;
for (int i = 1; i <= n; i++) {
int len = 1;
int r = a[i] & ((1<<half)-1);
int l = a[i] >>half;
for (int state = 0; state < (1<<half); ++state) {
if (bc[l][state] > k[i] || k[i] - bc[l][state] > 10) continue;
if (len < dp[state][r][k[i] - bc[l][state]].first + 1) {
len = dp[state][r][k[i] - bc[l][state]].first + 1;
trace[i] = dp[state][r][k[i] - bc[l][state]].second;
}
}
if (ans < len) {
ans = len;
pos = i;
}
for (int state = 0; state < (1<<half); ++state) {
if (dp[l][state][bc[state][r]].first < len) {
dp[l][state][bc[state][r]].first = len;
dp[l][state][bc[state][r]].second = i;
}
}
}
cout << ans << '\n';
int cnt = 0;
while (trace[pos]) {
arr[++cnt] = pos;
pos = trace[pos];
}
arr[++cnt] = pos;
for (int i = cnt ; i >= 1; i--) {
cout << arr[i] << " ";
}
}
signed main() {
cin.tie(0) -> sync_with_stdio(0);
solve();
return 0;
}
