#include <iostream>
using namespace std;

class CArea {
	int x, y;
	public:
	void set_values (int,int);
	int area () {return (x*y);}
}


void CArea::set_values (int a, int b) {
	x = a;
	y = b;
}

int main ()
{
	CArea rect;
	rect.set_values (3,4);
	cout << rect.area();
	return 0;
}