#P1453. [Wc]Dface双面棋盘
[Wc]Dface双面棋盘
Description
Input
Output
Samples
![](https://darkbzoj.cc/JudgeOnline/images/1453_4.jpg)
![](https://darkbzoj.cc/JudgeOnline/images/1453_5.jpg)
![](https://darkbzoj.cc/JudgeOnline/images/1453_4.jpg)
![](https://darkbzoj.cc/JudgeOnline/images/1453_5.jpg)