0 1 2 3 4 5 6 7 8 9
_ _ _ _ _ _ _ _ _ _
0|X X |
1|X X X X X X X X E |
2|X X X X X |
3|X X X X X X X X |
4|X X X X |
5|X X X X X X |
6|X X X |
7|B X X X X |
8|X X X X X X X X X X |
B - (0,7)
E - (9,1)
Cell's value:
B -- begin point
E -- end point(exit)
X -- wall
' '-- space