#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  int n;
  cin >> n;
  vector<int> a(n), b(n);
  rep(i, n) cin >> a[i];
  rep(i, n) cin >> b[i];
  vector<int> p(n);
  iota(p.begin(), p.end(), 0);
  map<int, int> mp;
  do {
    int sum = 0;
    rep(i, n) sum += max(0, a[p[i]] - b[i]);
    mp[sum]++;
  } while (next_permutation(p.begin(), p.end()));
  cout << max_element(mp.begin(), mp.end())->second << endl;
  return 0;
}