题解 | #求小球落地5次后所经历的路程和第5次反弹的高度#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        // while (in.hasNextInt()) { // 注意 while 处理多个 case
        //     int a = in.nextInt();
        //     int b = in.nextInt();
        //     System.out.println(a + b);
        // }
        int n = in.nextInt();
        float[] arr = new float[6];
        for (int i = 0; i < 6; i++) {
            if (i == 0) {
                arr[i] = (float)n;
                continue;
            }
            arr[i] = arr[i - 1] / 2;
        }
        float sum = 0.0f;
        for (int i = 0; i < 5; i++) {
            if (i == 0) {
                sum += arr[i];
                continue;
            }
            sum += arr[i] * 2;
        }
        System.out.println(sum);
        System.out.print(arr[5]);
    }
}