import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner  in = new Scanner(System.in);
		double a, b, c, a1, b1, c1;
		System.out.println("Введите длины строн a, b, c (a, b, c не могут быть меньше либо равными нулю): ");
		a = in.nextDouble();
		b = in.nextDouble();
		c = in.nextDouble();
		a1=0.5*Math.sqrt(2*b*b+2*c*c-a*a);
		b1=0.5*Math.sqrt(2*a*a+2*c*c-b*b);
		c1=0.5*Math.sqrt(2*a*a+2*b*b-c*c);
		System.out.printf(Locale.US, "a1=%.7f\n",a1);
		System.out.printf(Locale.US, "b1=%.7f\n",b1);
		System.out.printf(Locale.US, "c1=%.7f\n",c1);
	}
}