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The distance

Beginner

Python for kids 路 Lesson 22: if and else - one of two

Problem Statement

Read two numbers a and b. Print the difference between them - always without a minus (subtract the smaller from the bigger).

Input Format

Two whole numbers a and b, each on its own line (-1000 <= a, b <= 1000).

Output Format

One number - the result.

Examples
Example 1

Input

10
3

Output

7
Example 2

Input

3
10

Output

7