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();
        float sum = 0;
        //write your code here......
        

        //输出格式为：System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));
        while(n-- != 0){
            sum += h;
            h = h / 2;
            if (n == 0){
                break;
            }
            sum += h;
        }
        System.out.printf("%.3f",h);
        System.out.printf(" ");
        System.out.printf("%.3f",sum);

    }
}