using System;

public class Program

{

    public static void Main()

    {

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

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

         Double c =Double.Parse(Console.ReadLine());

         Double x1 = Math.Pow((b),2)-4*a*c;

        if(x1<0)

        {

          Console.WriteLine("no solusion");

        }

        else

        {

         Double y = Math.Sqrt(x1);

        x1 = (-b+y)/(2*a);

        Double x2 = (-b-y)/(2*a);

        Console.WriteLine ("("+x1+","+0+")");

        Console.WriteLine ("("+x2+","+0+")");

        }

        Console.WriteLine ("("+0+","+c+")");

        Double xk = (-b/(2*a));

        Double yk = a*(xk*xk)+b*xk+c;

        Console.WriteLine ("("+xk+","+yk+")");  

        if (a>0)

        {   

            Console.WriteLine ("prabula yeshara");

            Console.WriteLine ("x"+">"+xk+"תחום עלייה");

            Console.WriteLine ("x"+"<"+xk+"תחום ירידה");

        }

        else

        {

            Console.WriteLine ("parbula afuca");

            Console.WriteLine ("x"+"<"+xk+"תחום עלייה");

            Console.WriteLine ("x"+">"+xk+"תחום ירידה");

        }

        }

    }

​