#include<bits/stdc++.h>
using namespace std;
const int N=10005;
int n,a[N],ans;
int main(){
	cin>>n;
	for(int i=1;i<=n;++i)
	   cin>>a[i];
	for(int i=1;i<=n;++i)
	   for(int j=1;j<=n;++j)
	      if(a[i]>a[j])
	         ans++;
	         cout<<ans;
	return 0;
}