#include <iostream>
#include <vector>
using namespace std;
int main(int argc, char* argv[])
{
	int N;
	cin>>N;
	int i,j;
	vector<int> M(N);
	for (i=0;i<N;i++){
		cin>>M[i];
	}
	int Count=0;
	for (i=0;i<N-1;i++){
		for (j=i+1;j<N;j++){
			if (M[i]>=M[j]){
				Count++;
			}
		}
	}
	cout<<Count<<endl;
	return 0;
}