#include <iostream>
#include <string>
using namespace std;

int main()
{
	int n;
	cin >> n;
	double maleCounter = 0;
	double totalMaleHeight = 0;
	double avarageMaleHeight = 0;
	double femaleCounter = 0;
	double totalFemaleHeight = 0;
	double avarageFemaleHeight = 0;

	for (int i = 0; i < n; i++) {
		double readNumber;
		cin >> readNumber;
		if (readNumber < 0) {
			totalMaleHeight = totalMaleHeight + readNumber;
			maleCounter++;
		}
		if (readNumber >= 0) {
			totalFemaleHeight = totalFemaleHeight + readNumber;
			femaleCounter++;
		}
	}

	avarageMaleHeight = totalMaleHeight / maleCounter;
	avarageFemaleHeight = totalFemaleHeight / femaleCounter;
	cout << "vidvaikinu = "+ to_string(avarageMaleHeight * -1) + ", vidmerginu = " + to_string(avarageFemaleHeight) << endl;
	system("pause");
    return 0;
}