public class Line{
	
	int x1, y1, x2, y2;
	
	public Line(){
		x1=0;
		y1=0;
		x2=0;
		y2=0;
	}
	
	public Line(int nX1,int nY1, int nX2, int nY2){
		x1=nX1;
		y1=nY1;
		x2=nX2;
		y2=nY2;
	}
	
	public String toString(){
		String val=("PU "+x1+" , "+y1+";\nPD "+x2+" , "+y2+";\n");
		
		return val;
	}
		

}