以一个mXn的长方阵表示迷宫，0和1分别表示迷宫中的通路和障碍。设计一　　个程序，对任意设定的额迷宫，求出一条从入口到出口的通路，或得出没有通路的结论。(The maze is represented by a mXn's rectangular array, and 0 and 1 represent the paths and obstacles in the maze, respectively. A program is designed for an arbitrarily set maze to find a path from the entrance to the exit, or to draw a conclusion without access.)