in.txt是存放迷宫矩阵的读入文件。

in.txt文件中间的第一行的第一个数是迷宫的行数，第二个数是迷宫的列数。

从第二行开始都是迷宫矩阵。

注：

1）“0”是通路，“1”是挡板；

2）可以任意更改数据，但是迷宫的行数和列数一定要在第一行中正确标明；

3）每个迷宫数据之间有1个空格，两行之间没有空行；

4）in.txt跟puzzle.cpp一定要放在同一个目录下。

-in.txt maze matrix was deposited into the document read. In.txt among the first documents the first is the number of rows maze, and the second number is out in the maze. From the beginning of the second line are Matrix maze. Note : 1) "0" is access, "a" baffle; 2) can arbitrarily change data, but the number of rows, the maze and out a few must first identify the correct line; 3) Each maze of data between a space, the two lines are not available; 4) in.txt with puzzle.cpp must be placed under the same directory.