Problem Statement

Given is an integer x that is greater than or equal to 0, and less than or equal to 1.
Output 1 if x is equal to 0, or 0 if x is equal to 1.

Input

Input is given from Standard Input in the following format:
x

Output

Print 1 if x is equal to 0, or 0 if x is equal to 1.

Constraints

• $0 \leq x \leq 1$
• x is an integer

Sample Input 1

1

Sample Output 1

0

Sample Input 2

0

Sample Output 2

1

见题面 Input 部分

见题面 Output 部分