


def 	__lowercase		(  _UpperCamelCase,			_UpperCamelCase   )			->Optional[Any]:







      """simple docstring"""

      assert x is not None
      assert y is not None

      lowercase	:      List[Any]          =						len(__lowerCAmelCase   )
      lowercase	:      Optional[Any]          =						len(__lowerCAmelCase   )

      # declaring the array for storing the dp values
      lowercase	:      Any          =						[[0] * (n + 1) for _ in range(m + 1   )]  # noqa: E741

      for i in range(1,			m + 1   ):
            for j in range(1,			n + 1   ):
                  lowercase	:      Optional[int]          =						1 if x[i - 1] == y[j - 1] else 0

                  lowercase	:      int          =						max(l[i - 1][j],			l[i][j - 1],			l[i - 1][j - 1] + match   )

      lowercase	:      str          =						''''''
      lowercase	:      Any          =						m, n
      while i > 0 and j > 0:
            lowercase	:      Optional[int]          =						1 if x[i - 1] == y[j - 1] else 0

            if l[i][j] == l[i - 1][j - 1] + match:
                  if match == 1:
                        lowercase	:      Optional[Any]          =						x[i - 1] + seq
                  i -= 1
                  j -= 1
            elif l[i][j] == l[i - 1][j]:
                  i -= 1
            else:
                  j -= 1

      return l[m][n], seq


if __name__ == "__main__":
  __a       =					'''AGGTAB'''
  __a       =					'''GXTXAYB'''
  __a       =					4
  __a       =					'''GTAB'''

  __a ,					__a       =					longest_common_subsequence(a, b)
  print('''len =''', ln, ''', sub-sequence =''', subseq)
  import doctest

  doctest.testmod()






from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_tf_available, is_torch_available


A__								=						{
    '''configuration_ctrl''': ['''CTRL_PRETRAINED_CONFIG_ARCHIVE_MAP''', '''CTRLConfig'''],
    '''tokenization_ctrl''': ['''CTRLTokenizer'''],
}

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				A__								=						[
				    '''CTRL_PRETRAINED_MODEL_ARCHIVE_LIST''',
				    '''CTRLForSequenceClassification''',
				    '''CTRLLMHeadModel''',
				    '''CTRLModel''',
				    '''CTRLPreTrainedModel''',
				]

try:
				if not is_tf_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				A__								=						[
				    '''TF_CTRL_PRETRAINED_MODEL_ARCHIVE_LIST''',
				    '''TFCTRLForSequenceClassification''',
				    '''TFCTRLLMHeadModel''',
				    '''TFCTRLModel''',
				    '''TFCTRLPreTrainedModel''',
				]


if TYPE_CHECKING:
				from .configuration_ctrl import CTRL_PRETRAINED_CONFIG_ARCHIVE_MAP, CTRLConfig
				from .tokenization_ctrl import CTRLTokenizer

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_ctrl import (
								    CTRL_PRETRAINED_MODEL_ARCHIVE_LIST,
								    CTRLForSequenceClassification,
								    CTRLLMHeadModel,
								    CTRLModel,
								    CTRLPreTrainedModel,
								)

				try:
								if not is_tf_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_tf_ctrl import (
								    TF_CTRL_PRETRAINED_MODEL_ARCHIVE_LIST,
								    TFCTRLForSequenceClassification,
								    TFCTRLLMHeadModel,
								    TFCTRLModel,
								    TFCTRLPreTrainedModel,
								)

else:
				import sys

				A__								=						_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)

