using System;
public class Program
{
public static void Main()
Console.WriteLine("Введите х");
double x = Convert.ToDouble(Console.ReadLine());
double k = 1.3 * Math.Exp(-x/2) + Math.Abs(Math.Cos(2*3.14*x/3-1.4))-6/11;
Console.WriteLine("x={0} K={1}",x,k);
}