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Without the minus

Beginner

Python for kids 路 Lesson 21: if - when the condition is true

Problem Statement

Read a number n. If it is negative, change it to the opposite (without the minus). Print n.

Input Format

One whole number n (-1000 <= n <= 1000).

Output Format

One number - the result.

Examples
Example 1

Input

-7

Output

7
Example 2

Input

5

Output

5