by@__dAi00
WA
$ 'main'
\ /---o#
\-0(!x!)--i-{i}--e{~}<
/ \
| |
\-------------/
$ 'i'
\ /-(!q!)(b)a#
\-1(!b!)0(!c!)--{d}(c)q{~}<
/ \
@--m(!b!)------/ \
\--[0001]----(b)(!c!)a1(c)----@
$ 'd' (dup)
\-(!d!)(d)(d)#
$ '~'
\
| /-t-\ #
| / \|
\-< |
\ /|
\-f-/ @2039054001240437995803743791353406593092621221471722191301035244862660081661094902339084814295582725
Crash: No valid move