#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int> > ans;
int a[305], b[305], n;
int cur[305];
map<int, vector<int> > m;
int main() {
  ios_base::sync_with_stdio(0);
  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++) {
    m[a[i]].push_back(i);
  }
  for (auto &x : m) reverse(x.second.begin(), x.second.end());
  for (int i = 0; i < n; i++) {
    cur[i] = m[b[i]].back();
    m[b[i]].pop_back();
  }
  for (int i = 0; i < n; i++)
    if (1) cerr << cur[i] << " ";
  if (1) cerr << '\n';
  for (int i = 0; i < n; i++)
    for (int j = 0; j < n - 1; j++) {
      if (cur[j] > cur[j + 1]) {
        ans.push_back({j + 1, j + 2});
        swap(cur[j], cur[j + 1]);
      }
    }
  cout << ans.size() << '\n';
  for (auto x : ans) cout << x.first << " " << x.second << '\n';
}
