100 atcoder#ABC145A. [ABC145A] Circle
[ABC145A] Circle
Score : points
Problem Statement
Given is an integer .
How many times is the area of a circle of radius larger than the area of a circle of radius ?
It can be proved that the answer is always an integer under the constraints given.
Constraints
- All values in input are integers.
Input
Input is given from Standard Input in the following format:
Output
Print the area of a circle of radius , divided by the area of a circle of radius , as an integer.
2
4
The area of a circle of radius is times larger than the area of a circle of radius .
Note that output must be an integer - for example, 4.0
will not be accepted.
100
10000