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#include <iostream>
#include <algorithm>
#include "message.h"
#include "teatr.h"

using namespace std;

int main()
{
        if(MyNodeId() == 0) {
	int n = GetN();

	int count = 0;
	for (int i = 0; i < n; ++i)
	{
		for (int j = i + 1; j < n; ++j)
		{
			if (GetElement(i) > GetElement(j))
			{
				++count;
			}
		}
	}
	
	cout << count << endl;
        }

	return 0;
}