#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int arr[n];
  for (int i = 0; i < n; i++) cin >> arr[i];
  int count = 1;
  for (int i = 0; i < n - 1; i++) {
    if (arr[n - 1 - i] > arr[n - i - 2])
      count++;
    else
      break;
  }
  cout << n - count << endl;
  return 0;
}
