Not

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.

Constraints

• 0 \leq x \leq 1
• x is an integer

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.

Examples

Input

1

Output

0

Input

0

Output

1

inputFormat

outputFormat

Output 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

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.

Examples

Input

1

Output

0

Input

0

Output

1

样例

1

0