import java.io.*;
public class Quadratic
{
	//Quiz: Write realRoots method here.
	//realRoots returns true if quadratic has real roots


	//Driver
	public static void main(String[] args)
	{
	try{
           BufferedReader myReader = new BufferedReader
		    (new FileReader("Quiz.txt"));
		double a = Double.parseDouble(myReader.readLine());
		double b = Double.parseDouble(myReader.readLine());
		double c = Double.parseDouble(myReader.readLine());
		if(realRoots(a,b,c) )
			System.out.println("Real roots exist");
		else
			System.out.println("No real roots exist");
	}//end try
	catch(Exception e)
	{
	  System.out.println(e + " error opening file");
	  System.exit(1);
	}//end catch
	}//end main
}//end class