import java.util.Scanner;

public class SoucetCisel {

	// Staticka metoda pro nacteni INTu //
	public static int nactiInt(char pismenko) {
	    Scanner sc = new Scanner(System.in);
			
		System.out.print("Zadej cele cislo " + pismenko + ": ");
		int x = sc.nextInt();
		return x;
	}	
	
	
	public static void main(String[] args) {

		int a = Nacitani.nactiInt('a');
		int b = Nacitani.nactiInt('b');
		int c = Nacitani.nactiInt('c');

		//Odradkovani Vysledku
		System.out.println();

		int SoucetCisel=(a+b+c);
		System.out.println("Soucet cisel je: " + SoucetCisel);
	
		// GPrumer
        double Prumer = ((double)a+(double)b+(double)c)/3;
        System.out.println ("Prumer je: " + Prumer);
		
		// Geometricky prumer
        double GeometrickyPrumer = Math.pow (a * b * c, 1/3.0);
        System.out.println ("Geometricky prumer je: " + GeometrickyPrumer);
        
        // Kvadraticky prumer
        double KvadratickyPrumer = (Math.pow(Math.pow(a,2) + Math.pow(b,2) + Math.pow(c,2),1/2.0)) * 1 / (Math.pow(3,1/2.0));
        System.out.println("Kvadraticky prumer je: " + KvadratickyPrumer);

		
		
	}

}