import java.util.Scanner;

public class Dreieck {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        System.out.print("Bitte geben Sie die drei Seiten des Dreiecks an: ");

        double a = console.nextDouble();
        double b = console.nextDouble();
        double c = console.nextDouble();

        double alpha = Math.acos((b*b+c*c-a*a)/(2*b*c));
        double beta  = Math.acos((a*a+c*c-b*b)/(2*a*c));
        double gamma = Math.PI - alpha - beta;

        System.out.println("Alpha (Grad): "+Math.toDegrees(alpha));
        System.out.println("Beta (Grad):  "+Math.toDegrees(beta));
        System.out.println("Gamma (Grad): "+Math.toDegrees(gamma));
    }

}