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();//初始高度
        int n =scanner.nextInt();//落地的次数
        float h1 = h;
        float sum =0;
        //write your code here......
        for(int i = 1;i<=n;i++){
            //第n次落地总共经过的米数
            if(i==1){
                sum =  h1;
            }
            if(i>1)
            sum = sum + h1*2;
            //第n次落地的反弹高度
            h1 = h1/2;
            
        }
        
        System.out.println(String.format("%.3f", h1)+" "+String.format("%.3f", sum));
        

    }
}