


"""simple docstring"""




from __future__ import annotations

from bisect import bisect_left
from functools import total_ordering
from heapq import merge




@total_ordering
class 			__snake_case   (lowerCamelCase  ):




							def __lt__(     self:    str     ,							A_:    Union[str, Any]   ):
										return self[-1] < other[-1]




							def __eq__(     self:    Optional[int]     ,							A_:    Dict   ):
										return self[-1] == other[-1]





def       a_ (	lowercase__ :list     ):
			__lowerCamelCase          =      []
			# sort into stacks
			for element in collection:
						__lowerCamelCase          =      Stack([element]     )
						__lowerCamelCase          =      bisect_left(lowercase__,			lowercase__     )
						if i != len(lowercase__     ):
									stacks[i].append(lowercase__     )
						else:
									stacks.append(lowercase__     )

    # use a heap-based merge to merge stack efficiently
			__lowerCamelCase          =      merge(*(reversed(lowercase__     ) for stack in stacks)     )
			return collection


if __name__ == "__main__":
					__magic_name__						: Any    =				input('Enter numbers separated by a comma:\n').strip()
					__magic_name__						: int    =				[int(item) for item in user_input.split(',')]
					print(patience_sort(unsorted))








"""simple docstring"""




def       a_ (	lowercase__ :str     ):
			__lowerCamelCase          =      [int(lowercase__     ) for i in ip_va_address.split("""."""     ) if i.isdigit()]
			return len(lowercase__     ) == 4 and all(0 <= int(lowercase__     ) <= 254 for octet in octets     )


if __name__ == "__main__":
					__magic_name__						: Tuple    =				input().strip()
					__magic_name__						: Optional[int]    =				'valid' if is_ip_va_address_valid(ip) else 'invalid'
					print(f"""{ip} is a {valid_or_invalid} IP v4 address.""")




