题解 | #小球走过路程计算#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        float h=scanner.nextFloat();
        int n =scanner.nextInt();

        //write your code here......
         double s = 0;
        for (int i = 0; i < n; i++) {
            h = h / 2;
            s += 3 * h;
        }

        System.out.println(String.format("%.3f", h) + " " + String.format("%.3f", s - h));
        //输出格式为：System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));
        

    }
}