#include <bits/stdc++.h>
using namespace std;
#define ll long long int
const int M = 1e9 + 7;
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    vector<int> v(n);
    for (int i = 0; i < n; i++)
    {
        cin >> v[i];
    }
    stack<int> st;
    int cnt = 0;
    for (int j = 0; j < n; j++)
    {
        if(j>0 && v[j]==v[j-1]) continue;
        while (!st.empty() && v[st.top()] <v[j])
        {
            st.pop();
            if(st.size()>0) cnt++;
        }
        st.push(j);
    }
    cout << cnt << endl;
    return 0;
}
 
// 7
// 6 3 1 1 2 4 5

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

NQo1IDIgMSAzIDY=

5
5 2 1 3 6