#include <iostream>
#include <stdio.h>
using namespace std;

int n;
int num;
int ctr=0;
int stk[100001];
int sL=0;

int main()
{
    freopen("seq.in","r",stdin);
    freopen("seq.out","w",stdout);

    int i;

    scanf("%d",&n);

    for (i=1;i<=n;i++)
    {
        scanf("%d",&num);

        while(sL>0 && stk[sL]>num)
        {
            sL--;
            ctr++;
        }

        sL++;
        stk[sL]=num;
    }

    printf("%d\n",ctr);

    return 0;
}