p02552 AtCoder Beginner Contest 178 - 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
```python
x = int(input())
print(x * -1 + 1)
```