weAreElectric

import java.util.*;
public class ElectricalEnergy {

    public static void main(String[] args){

        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        long[] buildings=new long[n];

        for(int i=0;i<n;i++){
            buildings[i]=sc.nextInt();
        }


        long[] energyStorage=new long[n];
        for(int i=1;i<buildings.length;i++){
            long counter=0;
            quickSort(buildings,0,i-1);
            int j=i-1;
            while(j>=0)

                if(buildings[i] < buildings[j]){
                    counter++;

                    j--;
                }
            }
            energyStorage[i]=counter;
        }

        long energyNeeded=0;
        for(int i=0;i<energyStorage.length;i++)
            energyNeeded+=energyStorage[i];

        System.out.println(energyNeeded);

    }
}