#include <iostream>
using namespace std;
 
int main () {
	double x1, x2, x3;
	scanf ( " %lf %lf %lf ", &x1, &x2, &x3 ); // чтение из стандартного потока ввода.
	double b = -( x1 + x2 + x3 ); // вычисление коэф. b, c, d кубического уравнения.
	double c = x1*x2 + x2*x3 + x3*x1;
	double d = -( x1 * x2 * x3 );
	printf ("b = %2.2lf, c = %2.2lf, d = %2.2lf.", b, c, d); //вывод результата.
	return 0;
}
 

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-0.24 -1 2.24
-1 -2 -2.25
0.5 6 0.78
1 2 3