#include <iostream>
#include <ios>
#include <iomanip>

using std::cin;
using std::cout;
using std::endl;
using std::setprecision;
using std::streamsize;

int main()
{
	double x;
	double y;

	cout << "tal nr 1: ";
	cin >> x;
	cout << endl << "tal nr 2: ";
	cin >> y;

	streamsize prec = cout.precision();
	cout << endl << "NR 1 + NR 2 = " << setprecision(3) << x + y << endl;
	cout << "NR 1 * NR 2 = " << x * y << endl;
	cout << "NR 1 - NR 2 = " << x - y << endl;
	cout << "NR 1 / NR 2 = " << x / y << endl << setprecision(prec);

	system ("pause");

	return 0;
}