#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin >> n;
    vector<int> v;
    for(int i = 0 ; i < n; i++){
        int tmp;
        cin >> tmp;
        v.push_back(tmp);
    }
    int length = 0;
    for(int i = 0; i < n; i++){
        int i_start = i;
        int len_now = 0;
        while(i+1 < n && v[i+1] <= v[i_start]){
            if(v[i+1] == v[i_start]) {
                length += len_now;
                break;
            }
            len_now++;
            i++;
        }
        i = i_start;
    }
    cout << length << endl;

    return 0;
}