编程介的小学生 2020-01-26 17:51 采纳率: 20.5%
浏览 120

Two Mirrors 镜子的问题

Problem Description
Nomad wants to know why girls like using mirrors. So he bought one, but it's not a normal one. The mirror is made up of two normal mirrors, which are connected at a point (x2, y2). So it is said, two mirrors can be described as two line segment. (x1, y1) (x2, y2) and (x2, y2) (x3, y3). And Nomad is at the point (x0, y0). And he is amazing to see that there are many Nomads in the special mirror. The Kth Nomad is described as the picture below. (Mirror face is always on the side of the smaller angle, and three point of mirror are never in a line.)

The first Nomad is the image of Nomad
The second Nomad is the image of the first Nomad
The third Nomad is the image of the second Nomad
And continue to Kth Nomad~

The first Nomad is always in mirror(x1,y1)(x2,y2);
The second Nomad is always in mirror(x2,y2)(x3,y3);
The third Nomad is always in mirror(x1,y1)(x2,y2);
The 4th Nomad is always in mirror(x2,y2)(x3,y3);
And continue to Kth Nomad~

Input
There are multiple cases. For each test case, Nine numbers, x0, y0, x1, y1, x2, y2, x3, y3 and a integer K.(1 ≤ K ≤ 1000)

Output
If you can see Kth Nomad ,print a point x, y (accurate up to 4 decimal places.) where Kth Nomad is, or print "You can't see me!"(No quote).

Sample Input
0.0 0.0
-4.0 0
0.0 20.0
4.0 0
1
0.0 0.0
-4.0 0
0.0 20.0
4.0 0
2

Sample Output
-7.6923 1.5385
14.2012 5.9172

  • 写回答

0条回答 默认 最新

    报告相同问题?

    悬赏问题

    • ¥15 C#调用python代码(python带有库)
    • ¥15 矩阵加法的规则是两个矩阵中对应位置的数的绝对值进行加和
    • ¥15 活动选择题。最多可以参加几个项目?
    • ¥15 飞机曲面部件如机翼,壁板等具体的孔位模型
    • ¥15 vs2019中数据导出问题
    • ¥20 云服务Linux系统TCP-MSS值修改?
    • ¥20 关于#单片机#的问题:项目:使用模拟iic与ov2640通讯环境:F407问题:读取的ID号总是0xff,自己调了调发现在读从机数据时,SDA线上并未有信号变化(语言-c语言)
    • ¥20 怎么在stm32门禁成品上增加查询记录功能
    • ¥15 Source insight编写代码后使用CCS5.2版本import之后,代码跳到注释行里面
    • ¥50 NT4.0系统 STOP:0X0000007B