using directive

   class HelloWorld {

 static void Main(){ 

     n = Console.ToInt32(Console.ReadLine());

L=Math.Pow(y,2)0,81 cos i/Math.in y+2i;

 }

 Console.WriteLine("javob quyidagicha="+L);

L=Math.Log (8)/Math.Log (2);

     Console.WriteLine("javob quyidagicha="+L):

​