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();
        float sum = 0;
        float htemp = h;
        for (int i = 1; i <= n; i++) {

            sum = sum + h * 2;
            h = h / 2;
        }
        sum = sum - htemp;

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