using System;

​

public class Program

{

    public static void Main()

    {

        string buf;

        Console.WriteLine("Введите x");

        buf = Console.ReadLine();

        double x = Convert.ToDouble(buf);

        Console.WriteLine("Введите alfa");

        buf = Console.ReadLine();

        double a = double.Parse(buf);

        double y = Math.Sqrt(Math.PI * x) - Math.Exp(0.2 * Math.Sqrt(a)) + 2 * Math.Tan(2 * a) + 1.6e3 * Math.Log10(Math.Pow(x, 2));

        Console.WriteLine("Для х= {0} и alfa ={1}", x, a);

        Console.WriteLine("Результат =" + y);

    }

}