import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        //半径：直径，周长，面积
        double r = scanner.nextDouble();
        double d = r + r, p = d * 3.14159, a = Math.pow(r, 2) * Math.PI;
        System.out.printf("%.4f %.4f %.4f", d, p, a);
    }
}

有一半都错了