using System;

public class Program

{

    public static void Main()

    {

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

        Console.WriteLine(Math.Pow(a, 2));

        Console.Write("Enter a negative number: ");

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

        b *= -1;

        Console.WriteLine(Math.Abs(b));

        Console.WriteLine(Math.Round(Math.E, 1));

    }

}