#include <iostream>
#include <vector>
using namespace std;

int main()
{
  int N;
  long int count = 0;
  cin >> N;
  vector<long int> A(N);
  vector<long int> B(N);
  for (int i = 0; i < N; i++)
    cin >> A[i];
  for (int i = 0; i < N; i++)
    cin >> B[i];

  for (int i = 0; i < N - 1; i++)
  {
    for (int j = i + 1; j < N; j++)
    {
      long int Ai = A[i], Aj = A[j], Bi = B[i], Bj = B[j];
      if (Bi < Bj)
      {
        if (Ai + Bj < Aj + Bi)
          count++;
      }
      else
      {
        if (Ai + Bi < Aj + Bj)
          count++;
      }
    }
  }

  cout << count << endl;
}