full_name = input("Enter your full name: ")
space_index = full_name.rfind(' ')

if space_index == -1:
  print(f"Your name in reverse: {full_name}")
else:
  first_name = full_name[:full_name.index(' ')]
  last_name = full_name[space_index + 1:]
  print(f"Your name in reverse: {last_name}, {first_name}")