



_snake_case	=						{"a": ["c", "b"], "b": ["d", "e"], "c": [], "d": [], "e": []}
_snake_case	=						["a", "b", "c", "d", "e"]






def        A       (      _lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						):





							'''simple docstring'''




							_lowerCAmelCase  :							Tuple				     =					start
							# add current to visited
							visited.append(_lowerCamelCase						)
							_lowerCAmelCase  :							str				     =					edges[current]
							for neighbor in neighbors:
														# if neighbor not in visited, visit
														if neighbor not in visited:
																					_lowerCAmelCase  :							Optional[int]				     =					topological_sort(_lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						)
    # if all neighbors visited add current to sort
							sort.append(_lowerCamelCase						)
							# if all vertices haven't been visited select a new one to visit
							if len(_lowerCamelCase						) != len(_lowerCamelCase						):
														for vertice in vertices:
																					if vertice not in visited:
																												_lowerCAmelCase  :							Tuple				     =					topological_sort(_lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						)
    # return sort
							return sort


if __name__ == "__main__":
						_snake_case	=						topological_sort("a", [], [])
						print(sort)





def        A       (      _lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						):





							'''simple docstring'''




							def count_of_possible_combinations(_lowerCamelCase						) -> 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(_lowerCamelCase						)






def        A       (      _lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						):





							'''simple docstring'''




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

							_lowerCAmelCase  :							List[Any]				     =					[-1] * (target + 1)
							return count_of_possible_combinations_with_dp_array(_lowerCamelCase       ,				_lowerCamelCase						)






def        A       (      _lowerCamelCase       ,				_lowerCamelCase       ,				_lowerCamelCase						):





							'''simple docstring'''




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

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

							return dp_array[target]


if __name__ == "__main__":
						import doctest

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