Write a program that determines the distance between two points with the given coordinates
x1 and
x2 on the numerical axis. The distance between two points is calculated using the formula
|x2 - x1|
The first line of input contains two real numbers. Output one real number - the distance between two points.
Example
| N |
Input |
Output |
| 1 |
100000 0 |
100000.000000 |