In what concerns the continuous evaluation solving exercises grade during the semester, you should submit until 23:59 of March 3rd
(this exercise will still be available for submission after that deadline, but without couting towards your grade)
[to understand the context of this problem, you should read the class #01 exercise sheet]


[PII007] The case of the Cylinder

Matilda nees your help to solve a problem she was given her primary school.

The Problem

Write a program that, given the height H and radius R of a cylinder, computess its volume. Use the value of pi (π) as 3.14159 for your calculations.

Input

The input is a line with two integers H (the height) and R (the radius) separated by a single space.

Output

The output should be a single line displaying the volume of the cylinder, rounded to 3 decimal places.

Constraints

The following limits are guaranteed in all the test cases that will be given to your program:

0 < H ≤ 10       The height of the cylinder
0 < R ≤ 10       The radius of the cylinder

Example Input 1 Example Output 1
5 2
62.832

Example Input 2 Example Output 2
1 4
50.265

Programming II (CCINF1002)
DCC/FCUP - University of Porto