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......
    float sum = 0;
    for(int i = 1;i <= n;i++){
        if(i == n){
            sum = sum + h;
            h = h/2;
        }
        else{
            sum = sum + h + (h = (h/2));
        }
    }

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

}

}