#include <bits/stdc++.h>
using namespace std;
int n;
vector<pair<int, int> > ans;
int a[1000000];
int b[1000000];
int main() {
  cin >> 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; i++) {
    if (b[i] == a[i])
      continue;
    else {
      for (int j = i + 1; j < n; j++) {
        if (b[j] == a[i]) {
          for (int k = j; k > i; k--) {
            swap(b[k], b[k - 1]);
            ans.push_back(make_pair(k - 1, k));
          }
          break;
        }
      }
    }
  }
  cout << ans.size() << endl;
  for (int i = 0; i < ans.size(); i++) {
    cout << ++ans[i].first << " " << ++ans[i].second << endl;
  }
  return 0;
}
