Problem Statement

The function ReLU is defined as follows:[](ReLU(x) = \begin{cases} x & (x \geqq 0)
0 & (x < 0)
\end{cases})

Given an integer $x$, find $ReLU(x)$.

Constraints

• $x$ is an integer.
• $\-10 \\leq x \\leq 10$

Input

Input is given from Standard Input in the following format:

$x$

Output

Print the answer as an integer.

Sample Input 1

1

Sample Output 1

1

We have $1 \\geq 0$, so $ReLU(1) = 1$.

Sample Input 2

0

Sample Output 2

0

Sample Input 3

-1

Sample Output 3

0