题解 | #小球走过路程计算#

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        float h=scanner.nextFloat();
        int n =scanner.nextInt();
        int i=0;
        double result=h;
        double sum=h;
        for(i=n;i>0;i--){
            result/=2;
            if(i>1){
                sum+=result*2;
            }
        }
        System.out.println(String.format("%.3f %.3f",result,sum));
        //write your code here......
        
        //输出格式为：System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));
        

    }
}