#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ul;
typedef signed long long ll;
ul over = 1000000007;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed;
  ll n;
  cin >> n;
  ll a[n], b[n];
  for (ll i = 0; i < n; ++i) {cin >> a[i]; b[i] = a[i];}
  sort(b, b+n);
  ll ans = n;
  ll piv_a = n-1, piv_b = n-1;
  while (piv_a >= 0) {
    if (a[piv_a] == b[piv_b]) {
      ans--;
      piv_b--;
    }
    piv_a--;
  }
  cout << ans << endl;
  return 0;
}