import java.math.BigDecimal;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    }
} import java.math.BigDecimal; BigDecimal java.math import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    }
} Main public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    } main {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) double a = scanner.nextDouble(); a scanner.nextDouble() scanner.nextDouble scanner BigDecimal b = new BigDecimal(a); b new BigDecimal(a) BigDecimal c = new BigDecimal(2); c new BigDecimal(2) BigDecimal d = new BigDecimal(3.14159265359); d new BigDecimal(3.14159265359) BigDecimal x = b.multiply(c).multiply(d); x b.multiply(c).multiply(d) b.multiply(c).multiply b.multiply(c) b.multiply b c d BigDecimal y = b.multiply(b).multiply(d); y b.multiply(b).multiply(d) b.multiply(b).multiply b.multiply(b) b.multiply b b d System.out.println(y + " " + x) System.out.println System.out System System.out y + " " + x y + " " + x y " " x String[] args args public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    }
} public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    }
} Main
import java.math.BigDecimal;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble();
        BigDecimal b = new BigDecimal(a);
        BigDecimal c = new BigDecimal(2);
        BigDecimal d = new BigDecimal(3.14159265359);

//        Integer b = scanner.nextInt();

        BigDecimal x = b.multiply(c).multiply(d);
        BigDecimal y = b.multiply(b).multiply(d);
        System.out.println(y + " " + x);
    }
}
