Problem10791--ABC145 - A - Circle

10791: ABC145 - A - Circle

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

Given is an integer $r$.

How many times is the area of a circle of radius $r$ larger than the area of a circle of radius $1$?

It can be proved that the answer is always an integer under the constraints given.

Input

Input is given from Standard Input in the following format:

```
$r$
```

Output

Print the area of a circle of radius $r$, divided by the area of a circle of radius $1$, as an integer.

Constraints

-   $1 \leq r \leq 100$
-   All values in input are integers.

Sample 1 Input

2

Sample 1 Output

4

How many times is the area of a circle of radius $r$ larger than the area of a circle of radius $1$?

It can be proved that the answer is always an integer under the constraints given.

Sample 2 Input

100

Sample 2 Output

10000

Source/Category