using System;

namespace QuadraticEquation
{
    class Program
    {
        static void Main(string[] args)
        {
            double a = double.Parse(Console.ReadLine());
            double b = double.Parse(Console.ReadLine());
            double c = double.Parse(Console.ReadLine());

            double discriminant = (b * b) - (4 * a * c);
            double x1 = 0;
            double x2 = 0;

            if (discriminant > 0)
            {
                 x1 = ((-b) - Math.Sqrt(discriminant)) / (2 * a);
                 x2 = ((-b) + Math.Sqrt(discriminant)) / (2 * a);
                Console.WriteLine($"x1={x1}; x2={x2}");
            }
            else if (discriminant == 0)
            {
                 x2 = ((-b) + Math.Sqrt(discriminant)) / (2 * a);
                 x1 = x2;
                Console.WriteLine($"x1={x1}; x2={x2}");
            }
            else
            {
                Console.WriteLine("No real roots");
            }


        }
    }
}