// sort_youhao.vm
int 2048
str c
int 7
str hello
int 11
list 3
dstack2 before first sort
sort
dstack2 after first sort
str a
int 1024
str world
str one
list 2
dstack2 before second sort
sort
dstack2 after second sort
str dream
int 1
list 2
dstack2 before third sort
sort
dstack2 after third sort
str b
str 4096
int 1
int 2
int 3
list 1
list 2
list 2
sort
list 10
dstack2 at end
//dstack2 before final sort
//sort
//dstack2 after final sort