using System;
using System.Globalization;
using System.Numerics;
public class ExaBigInteger
{
public static void Main()
{
BigInteger nombre = 999999999999999;
nombre = BigInteger.Pow(nombre, 3) * BigInteger.MinusOne;
NumberFormatInfo formatBig = new NumberFormatInfo();
formatBig.NegativeSign = "~";
Console.WriteLine(nombre.ToString(formatBig));
}
}