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));
        float sum = h; //经过的距离
        for (int i = 0; i < n; i++) {
            sum = sum + h;
            h = h / 2;
        }
        sum = sum - 2 * h;
        System.out.println(String.format("%.3f", h) + " " + String.format("%.3f", sum));


    }
}