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......
    float sum = 0;
    if(n == 1){
        sum = h;
        h /= 2.0;
    }else{
        sum = h;
         for(int i = 2;i <= n;i++){
              h /= 2.0;
              sum += (h*2.0);
         }
        h /= 2.0;
    }
    System.out.printf("%.3f %.3f",h,sum);
    

}

}