fork download
  1. f=lambda n,k=n<0:n and n%10+(k+f(k-n//10))*10
  2.  
  3. print(f(4))
Runtime error #stdin #stdout #stderr 0.01s 9992KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
Traceback (most recent call last):
  File "./prog.py", line 1, in <module>
NameError: name 'n' is not defined