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();//输入初始高度 int n = scanner.nextInt();//输入落地次数

    //write your code here......
    float sum = h;//刚开始会下落初始高度
    for(int i = 0; i < n; i++)
    {
        h /= 2;//每次下落高度减少一半
        sum += h * 2;//在此循环中一共算的是（n + 1）次下落的高度
    }
    System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum - h * 2));
    

}

}