udebug 上 feodorv 提供的数据是错误的，大概是用的错误的 lyd 写法，各位注意。

正确输出可以大致参考：

Maze #1
neeSesswwnEseN

Maze #2
seeennwSesswwnEseN

Maze #3
neeSnwwsseEseN

Maze #4
neeSnwwsseEseN

Maze #5
eeeesssWWWswNNNNNNsseeennnwwWWW

Maze #6
nWswNNNNNNenWWWWWWWWW

Maze #7
nWWWWswNNNNNNsseeennnwwWWWWWW

Maze #8
eeeeeesessWWWeennnwwwwwwssseeseNNNsseeennnwwWWWeessswwwnnN

Maze #9
Impossible.

Maze #10
eesssswWWswNNNNwnEEneSS

Maze #11
eesssswWWswNNNNwnEEwwnneeesSS

Maze #12
Impossible.

Maze #13
eeeennnnwwwswwssEEEEseNNNenWWWnwSesWWennwwsS

Maze #14
eeeeennnwwwwwwssEEEEEseNNenWWWWWWennwwsS

Maze #15
eessWennwwsSwwsseeNN

Maze #16
WWnwSS

Maze #17
EEneSS

Maze #18
WWswNN

Maze #19
EEseNN

Maze #20
NNwnEE

Maze #21
SSwsEE

Maze #22
SSesWW

Maze #23
NNenWW

Maze #24
nNNNNseennwWWWWswNN

Maze #25
eeeeeeeeennnnnnnwwssssswwwwwwWWWWswNNNNNN