Description

In math class, the teacher gave two numbers, a and b, and asked Xiao O to find the value of |a - b|. Can you help Xiao O solve this using a computer?

Input Format

Two numbers, a and b.

Output Format

Output |a - b|.

```input1 7 6 ``` ```output1 1 ``` ## Hint

Data range: a < 1000, b < 1000;

① a may be greater than b

② a may be less than b

Source

CodesOnline