using System;

public class Program

{

    public static void Main()

    {

        double a=double.Parse(Console.ReadLine());

        double b=double.Parse(Console.ReadLine());

        double x;

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

        {

            Console.WriteLine("Vsqko x e reshenie"); 

        }

        else

        {

            x=(-b)/a;

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

        }

    }

}