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

int main()
{
  int N, count = 0;
  cin >> N;
  vector<int> A(N);
  vector<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++)
    {
      if (B[i] < B[j])
      {
        if (A[i] + B[j] < A[j] + B[i])
          count++;
      }
      else
      {
        if (A[i] + B[i] < A[j] + B[j])
          count++;
      }
    }
  }

  cout << count << endl;
}