#include<iostream>
using namespace std;
int param = -3;
class geometry
{
public:
geometry(){param = 1;}
static int retParam()
{
return param;
}
static double area(double h, double w)
{
return h * w;
}
static double area(double r)
{
return r * r * 3.14;
}
};
int main()
{
double rectangle_area = geometry::area(3, 4);
double circle_area = geometry::area(5);
cout << rectangle_area << endl;
cout << circle_area << endl;
cout<<geometry::retParam()<<endl;
cout<<geometry().retParam()<<endl;
return 0;
}