using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine((double)1.0e15 == (double) (1.0e15+1.0));

        var factor = 1e10;

        var inv_factor = 1.0 / factor;

        var a = Math.PI / factor;

        var b = Math.PI * inv_factor;

        Console.WriteLine(a);

        Console.WriteLine(b);

        Console.WriteLine(a == b);

        Console.WriteLine(a - b);

    }

}