문제 20-2

class equaltest
{
	public static void main(String[] args)
	{
		Scanner sc=new Scanner(System.in);
		System.out.print("input1: ");
		double d1= sc.nextDouble();
		System.out.print("input2: ");
		double d2= sc.nextDouble();
		
		BigDecimal bd1 = new BigDecimal(Double.toString(d1));
		
		BigDecimal bd2 = new BigDecimal(Double.toString(d2));
		
		BigDecimal sub= bd1.subtract(bd2);
		
		BigDecimal result = sub.abs();
		
		System.out.println(result);
		
	}
	
}