z1

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 */
package zestaw;
import java.util.Scanner;

/**
 *
 * @author student
 */
public class Zestaw {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner skaner = new Scanner(System.in);
        System.out.println("LiczbaA = ");
            double LiczbaA = skaner.nextDouble();
        System.out.println("LiczbaB = ");
            double LiczbaB = skaner.nextDouble();

        double sa = (LiczbaA+LiczbaB)/2;
        double sg = Math.sqrt(LiczbaA * LiczbaB);
        double shOdw = 1/LiczbaA + 1/LiczbaB;
        double sh = 1/shOdw;

        System.out.println("arytmetyczna: " + sa + " geometryczna: " + sg + " harmoniczna: " + sh );









    }

}