#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;
  vector<int> a(N), b(N), c(N);
  int maximum = INT_MIN;
  int ans = 0;

  for (int i = 0; i < N; i++) {
    cin >> a.at(i);
    c.at(i) = i;
  }
  for (int i = 0; i < N; i++) cin >> b.at(i);

  do {
    int result = 0;
    for (int i = 0; i < N; i++) {
      if (a.at(c.at(i)) > b.at(i))
        result += a.at(c.at(i)) - b.at(i);
    }
    if (result > maximum) {
      maximum = result;
      ans = 1;
    }
    else if (result == maximum)
      ans++;
  } while (next_permutation(c.begin(), c.end()));

  cout << ans << endl;
}