import java.io.*;

//import java.io.BufferedReader;
//import java.io.InputStreamReader;
//import java.io.IOException;



public class kadai2
	{
	public static void main(String arg[])
		{
		BufferedReader myReader = new BufferedReader(new InputStreamReader (System.in),1);

		double A=0.0;
		double B=0.0;
		double C=0.0;

			try{
				System.out.println("aを入力してください");  
				String A_Reader = myReader.readLine();
				A               = Double.parseDouble(A_Reader);


				System.out.println("bを入力してください");  
				String B_Reader = myReader.readLine();
			    B              = Double.parseDouble(B_Reader);

				System.out.println("cを入力してください");  
				String C_Reader = myReader.readLine();
			    C              = Double.parseDouble(C_Reader);

				double denominator = 2*A;
				double first_b= -B;
				double root_Before=Math.pow(B,2)- (4*A*C);

				double kyo = Math.abs(root_Before);

				double root=Math.sqrt(root_Before);


				double num1 =first_b + root;
				double num2 =first_b - root;
				

				Fraction f=new Fraction(num1,denominator);
				Fraction f2=new Fraction(num2,denominator);

				System.out.println( "計算しない表示は" + first_b+ "±√" + root_Before + "/" + denominator +"です。" );

				
				if(root_Before<0)
					{
					System.out.println("計算結果は" +first_b + "±√"+kyo+"i" + "/" + denominator + "(虚数解)");

					}
				if(root_Before==0)
					{
					System.out.println("計算結果は" + num1 +"/"+ denominator+"(重根)");

                    System.out.println("計算結果2は" + f.numerator+"/"+ f.denominator+"(重根)");
					}

				if(root_Before>0)
					{
					System.out.println("計算結果は" + num1 +"/"+ denominator + "  or  " + num2 + "/" + denominator +"です。" );

                    System.out.println("計算結果2は" +  f.numerator +"/"+ f.denominator + "  or  " + f2.numerator + "/" + f2.denominator +"です。" );
					}

				}catch(IOException e){

				}catch(NumberFormatException n){System.out.println("入力された数値が正しくないです。");

			}
		}
	}