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 = h;
        for(int i = 0;i<n-1;i++)
        {
            h /= 2;
            sum += h*2;
        }
        System.out.printf("%.3f %.3f", h/2, sum);
    }
}