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#include<iostream>
#include<vector>
#include<teatr.h>

using namespace std;

int main()
{
	int x = GetN();
	
	long long i, j, suma = 0;
	vector <int> heights;
	
	for(i = 0; i < x; i++)
		{
			heights.push_back(GetElement(i));
			
		}
	
		for(i = 0; i < heights.size(); i++)
		{
				for(j = i + 1; j < heights.size(); j++)
				{
						if(heights[i] > heights[j])
						suma += 1;
				}
		}
	
	
	
	cout << suma;
	
	return 0;
}