public class Main {
  public static void main(String...args) {
    double r = new java.util.Scanner(System.in).nextDouble();

    double area = r * r * Math.PI;
    double circumference = r * 2 * Math.PI;

    System.out.printf("%f %f\n", area, circumference);
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz