public class ConstructorOverloading{
	public static void main(String args[]){
		Rectangle rectangle1=new Rectangle(2,4);
		int areaInFirstConstructor=rectangle1.first();
		System.out.println(" The area of a rectangle in first constructor is :  " + areaInFirstConstructor);
		Rectangle rectangle2=new Rectangle(5);
		int areaInSecondConstructor=rectangle2.second();
		System.out.println(" The area of a rectangle in first constructor is :  " + areaInSecondConstructor);
		Rectangle rectangle3=new Rectangle(2.0f);
		float areaInThirdConstructor=rectangle3.third();
		System.out.println(" The area of a rectangle in first constructor is :  " + areaInThirdConstructor);
		Rectangle rectangle4=new Rectangle(3.0f,2.0f);
		float areaInFourthConstructor=rectangle4.fourth();
		System.out.println(" The area of a rectangle in first constructor is :  " + areaInFourthConstructor);
	}
}

class Rectangle{
	int l, b;
	float p, q;
	public Rectangle(int x, int y){
		l = x;
		b = y;
	}
	public int first(){ 
		return(l * b);
	}
	public Rectangle(int x){
		l = x;
		b = x;
	}
	public int second(){
		return(l * b);
	}
	public Rectangle(float x){
		p = x;
		q = x;
	}
	public float third(){
		return(p * q);
	}
	public Rectangle(float x, float y){
		p = x;
		q = y;
	}
	public float fourth(){
		return(p * q);
	}
}