# create three rails
add track (0,2) -> (0,0)
add track (0,0) -> (0,-2)
add track (0,-2) -> (0,-4)
delete track 2
delete track 1
delete track 2
delete track 3
# try to delete track under train
add track (-5,0) -> (0,0)
add track (0,0) -> (5,0)
create engine diesel ABC DEF 1 true true
add train 1 ABC-DEF
put train 1 at (0,0) in direction 1,0
delete track 1
exit