#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<pair<int, int> > p;
  int a[n + 1], b[n + 1];
  for (int i = 1; i <= n; i++) cin >> a[i];
  for (int i = 1; i <= n; i++) cin >> b[i];
  for (int i = 1; i <= n; i++) {
    if (a[i] != b[i]) {
      for (int j = i + 1; j <= n; j++) {
        if (a[i] == b[j]) {
          for (int k = j; k > i; k--) {
            p.push_back(make_pair(k - 1, k));
            swap(b[k], b[k - 1]);
          }
          break;
        }
      }
    }
  }
  cout << p.size() << endl;
  for (int i = 0; i < p.size(); i++)
    cout << p[i].first << " " << p[i].second << endl;
}
