using System;

​

namespace LuyenCode

{

    internal class Program

    {

        static void Main(string[] args)

        {

            double x1, x2;

            string[] ab = Console.ReadLine().Split(' ');

            double a = double.Parse(ab[0]);

            double b = double.Parse(ab[1]);

            double c = double.Parse(ab[2]);

            double delta = b * b - 4 * a * c;

            if (a == 0)

            {

                if(b == 0)

                {

                    if(c == 0)

                        Console.WriteLine("INF");

                    else

                        Console.WriteLine("NO");

                }

                else if(b > 0)

                    Console.WriteLine(Math.Round(-c/b, 2));

                else if(b < 0)

                {

                    if(c == 0)

                    {

                        b = Math.Abs(b);

                        Console.WriteLine(Math.Round(-c/b, 2));

                    }

                    else if(c != 0)

                        Console.WriteLine(Math.Round(-c / b, 2));

                }

            }

            else

            {

                if(delta > 0)

                {

                    x1 = Math.Round((-b - Math.Sqrt(delta)) / (2 * a), 2);

                    x2 = Math.Round((-b + Math.Sqrt(delta)) / (2 * a), 2);

                    if(x1 < x2)

                        Console.WriteLine(x1 + " " + x2);

                    else

                        Console.WriteLine(x2 + " " + x1);

                }

                else if(delta < 0)

                    Console.WriteLine("NO");

                else

                    Console.WriteLine(Math.Round(-b/2*a, 2));

            }

        }

    }

}

​