using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Insert the radius of a circle to calculate its area and circumference. (All values in centimeter):");

        try {

            string userInput = Console.ReadLine();

            double radius = double.Parse(userInput);

            double circumference = (Math.Round((2 * Math.PI * radius) * 100) / 100);

            double area = (Math.Round((Math.PI * (radius * radius) * 100)) / 100);

            Console.WriteLine("For a circle with a radius: of " + radius + " cm, the circumference is equal to " + circumference + " cm, and its area is equal to " + area + " cm.");

        } catch {

            Console.WriteLine("Oops! Seems like something went wrong while parsing the input!\nRestart and try again!");

        }

    }

}