



'''simple docstring'''





from typing import Optional, Union

import torch
from torch import nn

from ...configuration_utils import ConfigMixin, register_to_config
from ...models.modeling_utils import ModelMixin






class 	lowerCAmelCase_(    SCREAMING_SNAKE_CASE_						,			SCREAMING_SNAKE_CASE_					):
  '''simple docstring'''




  @register_to_config
  def __init__(   self  ,__UpperCAmelCase = 768  ,)   ->		Tuple:
      super().__init__()

      lowerCAmelCase__			:  Optional[Any]											= nn.Parameter(torch.zeros(1  ,__UpperCAmelCase				)				)
      lowerCAmelCase__			:  Any											= nn.Parameter(torch.ones(1  ,__UpperCAmelCase				)				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase = None  ,__UpperCAmelCase = None  ,)   ->		List[Any]:
      lowerCAmelCase__			:  Optional[Any]											= nn.Parameter(self.mean.to(__UpperCAmelCase				).to(__UpperCAmelCase				)				)
      lowerCAmelCase__			:  Any											= nn.Parameter(self.std.to(__UpperCAmelCase				).to(__UpperCAmelCase				)				)
      return self




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		str:
      lowerCAmelCase__			:  List[str]											= (embeds - self.mean) * 1.0 / self.std
      return embeds






  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		int:
      lowerCAmelCase__			:  int											= (embeds * self.std) + self.mean
      return embeds







'''simple docstring'''





def        _SCREAMING_SNAKE_CASE  (	UpperCamelCase							,   UpperCamelCase							,   UpperCamelCase      ):



    """simple docstring"""





    def count_of_possible_combinations(UpperCamelCase      ) -> int:
        if target < 0:
            return 0
        if target == 0:
            return 1
        return sum(count_of_possible_combinations(target - item      ) for item in array      )

    return count_of_possible_combinations(UpperCamelCase      )
def        _SCREAMING_SNAKE_CASE  (	UpperCamelCase							,   UpperCamelCase							,   UpperCamelCase      ):



    """simple docstring"""





    def count_of_possible_combinations_with_dp_array(
        UpperCamelCase							,   UpperCamelCase      ) -> int:
        if target < 0:
            return 0
        if target == 0:
            return 1
        if dp_array[target] != -1:
            return dp_array[target]
        lowerCAmelCase__			:  Any											= sum(
            count_of_possible_combinations_with_dp_array(target - item							,   UpperCamelCase      )
            for item in array      )
        lowerCAmelCase__			:  Tuple											= answer
        return answer

    lowerCAmelCase__			:  Optional[int]											= [-1] * (target + 1)
    return count_of_possible_combinations_with_dp_array(UpperCamelCase							,   UpperCamelCase      )
def        _SCREAMING_SNAKE_CASE  (	UpperCamelCase							,   UpperCamelCase							,   UpperCamelCase      ):



    """simple docstring"""





    lowerCAmelCase__			:  str											= [0] * (target + 1)
    lowerCAmelCase__			:  List[Any]											= 1

    for i in range(1							,   target + 1      ):
        for j in range(UpperCamelCase      ):
            if i - array[j] >= 0:
                dp_array[i] += dp_array[i - array[j]]

    return dp_array[target]


if __name__ == "__main__":
 import doctest

 doctest.testmod()
 _lowerCAmelCase										=     3
 _lowerCAmelCase										=     5
 _lowerCAmelCase										=     [1, 2, 5]
 print(combination_sum_iv(n, array, target))


