using System;

namespace ylab1
{
  class Program
  {
    static void Main(string[] args)
    {
      double x = 2.444;
      double y = 0.869 * Math.Pow( 10, -2 );
      double z =-0.13 * Math.Pow( 10, 3 );
      double h = ( Math.Pow( x, y + 1 ) + Math.Exp( y - 1 ) ) / ( 1 + x * Math.Abs( y - Math.Tan( z ) ) ) * ( 1 + Math.Abs( y - x ) ) + ( Math.Pow( Math.Abs(y - x ), 2 ) ) / (2) - ( Math.Pow(  Math.Abs(y -x),3 )) / (3)  ;
      Console.WriteLine( h );
    }
  }
}