#include <iostream>

using namespace std;



int area(int l = 1, int w = 1)
{

	return l * w;

}




int main()
{

	int l{ 5 };

	int w{ 9 };

	//for (int i = 0; i < 20; ++i)
		cout << area(l) << endl;




	return 0;
}