using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Ievadi rinka linijas radiusu  x");

        int x = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Rinka linijas radius ir " +(x));

        Console.WriteLine("Rinka laukums ir "+(3.14*x*x));

        //Console.WriteLine(3.14*x*x);

    }

}