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......
    

    //输出格式为：System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));
    double sum=0;
    double o=h;
    for(int i=0;i<n;i++){
       /* sum+=(double)h;
        h/=2;
        sum+=h;*/
        //第一次只有落下所以减去第一次一次的高度
        sum+=2*h;
        h/=2;
    }
    

System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum-o)); } }