ReLU

Source: AtCoder

Problem Statement

For an integer $x$, define $\operatorname{ReLU}(x)=x$ when $x\ge0$, and $0$ when $x<0$. Compute the value.

Input

One line contains the integer $x$.

Output

Print $\operatorname{ReLU}(x)$.

Subtasks

• Subtask 1 (100%): $-10 \le x \le 10$; $x$ is an integer.

Examples

Example 1

Input

1

Output

1

Explanation

For the sample values 1, evaluating the conditions in the statement gives 1. Therefore the program prints the shown output.

Example 2

Input

0

Output

0

Explanation

For the sample values 0, evaluating the conditions in the statement gives 0. Therefore the program prints the shown output.

Example 3

Input

-1

Output

0

Explanation

For the sample values -1, evaluating the conditions in the statement gives 0. Therefore the program prints the shown output.