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
#include<cstdio>
int main(){int x;scanf("%d",&x);printf("%d\n",x^1);}