Problem:
Circle

Write a program which calculates the area and circumference of a circle for given radius r.

Input

A real number r is given.

Output

Print the area and circumference of the circle in a line. Put a single space between them. The output should not contain an absolute error greater than 10-5.

Constraints

0 < r < 10000

Sample Input 1

2

Sample Output 1

12.566371 12.566371

Sample Input 2

3

Sample Output 2

28.274334 18.849556

Solution in JAVA (judge verdict: Wrong Answer)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) throws Exception {
		BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
		String s;
		int inCnt = 0;
		while ((s = stdIn.readLine()) != null) {
			String[] se = s.split(" ");
			Double in1 = Double.valueOf(se[0]);
			doMain(++inCnt, in1);
		}
		System.exit(0);
	}

	private static void doMain(int inCnt, Double in1) {
		Double a = 2 * in1 * Math.PI;
		Double b = in1 * in1 * Math.PI;
		System.out.printf("%f %f\n", a, b);

	}
}