Description

In the first computer science class, the teacher explained that computers are made up of many small switches: $1$ represents on, and $0$ represents off. The students in the class understood that using a light switch is simply changing $1$ to $0$ and $0$ to $1$.

Input Format

Input consists of a single line containing an integer that is either $0$ or $1$.

Output Format

If the input is $0$, output $1$;
If the input is $1$, output $0$.

Sample

1

0