using System;

public class Program

{

    public static void Main()

    {

        double a , b , x ;

        string s ; 

        Console.WriteLine("ievadiet a=") ;

        s=Console.ReadLine();

        a=double.Parse(s);

        Console.WriteLine("ievadiet b=") ;

        s=Console.ReadLine();

        b=double.Parse(s); 

        if(a>0) 

        {

         x = b / a;

         Console.WriteLine("x=" + x);

        }

        else if(a==0 & b==0)

        {

         Console.WriteLine("Der jebkurs skaitlis");

        }

        else if(a==0 & b>0)

        {

         Console.WriteLine("Risinjums neeksiste");

        }

    }

}