搜索进阶题目之A Knight's Journey

2020年1月17日 1250点热度 0人点赞 0条评论

搜索进阶题目之A Knight's Journey

时间: 1ms        内存:128M

描述:


The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around the world. Whenever a knight moves, it is two squares in one direction and one square perpendicular to this. The world of a knight is the chessboard he is living on. Our knight lives on a chessboard that has a smaller area than a regular 8 * 8 board, but it is still rectangular. Can you help this adventurous knight to make travel plans?




输入:


The input begins with a positive integer n in the first line. The following lines contain n test cases. Each test case consists of a single line with two positive integers p and q, such that 1 <= p * q <= 26. This represents a p * q chessboard, where p describes how many different square numbers 1, . . . , p exist, q describes how many different square letters exist. These are the first q letters of the Latin alphabet: A, . . .

输出:


The output for every scenario begins with a line containing "Scenario #i:", where i is the number of the scenario starting at 1. Then print a single line containing the lexicographically first path that visits all squares of the chessboard with knight moves followed by an empty line. The path should be given on a single line by concatenating the names of the visited squares. Each square name consists of a capital letter followed by a number.
If no such path exist, you should output impossible on a single line.

示例输入:

3
1 1
2 3
4 3

示例输出:

Scenario #1:
A1

Scenario #2:
impossible

Scenario #3:
A1B3C1A2B4C2A3B1C3A4B2C4

提示:

参考答案:

解锁文章

没有看到答案?微信扫描二维码可免费解锁文章

微信扫描二维码解锁

使用微信扫描二维码打开广告页面后可以立即关闭,再刷新此页面即可正常浏览此文章

所跳转广告均由第三方提供,并不代表本站观点!

已经扫描此二维码?点此立即跳转

code

这个人很懒,什么都没留下

文章评论