题解 | #小球走过路程计算#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息

public class Main {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

double height = in.nextDouble();

double land_Time = in.nextInt();

double sum = 0;

for(int i = 1; i <= land_Time; i++){

if(i == 1){

sum += height;

}else{

sum += height * 2;

}

height /= 2;

}

System.out.print(String.format("%.3f", height));

System.out.print(" " + String.format("%.3f", sum));

}

}