env3;
fs;
dddddddddffffffFbbbbbxxxtttkkkkkssssssrrr;
. . r . . x x x x x . . l . .
. . . . . # # # # # . . . . .
. 0 . 1 # # # # # # # 6 . 5 .
. . 4 . # # V # V # # . 9 . .
. 2 . 3 # # # # # # # 8 . 7 .
x x x x x # # V # # x x x x x
x x x x x x # # # x x x x x x
x . . . x x # # # x x . . . x
x . V . x x x x x x x . V . x
x . . . x x x T x x x . . . x
x x x x x x x x x x x x x x x