




"""simple docstring"""






class lowerCAmelCase__			:






			'''simple docstring'''



			def __init__(						self						):
							_lowerCamelCase  :    List[Any]					=					0
							_lowerCamelCase  :    int					=					0
							_lowerCamelCase  :    Any					=					{}
			def       A_					(						self						,   lowercase						):
							if vertex not in self.adjacency:
											_lowerCamelCase  :    Optional[int]					=					{}
											self.num_vertices += 1
			def       A_					(						self						,   lowercase						,   lowercase						,   lowercase						):
							self.add_vertex(lowercase						)
							self.add_vertex(lowercase						)

							if head == tail:
											return

							_lowerCamelCase  :    Tuple					=					weight
							_lowerCamelCase  :    Tuple					=					weight
			def       A_					(						self						):
							_lowerCamelCase  :    Union[str, Any]					=					self.get_edges()
							for edge in edges:
											_lowerCamelCase  :    Dict					=					edge
											edges.remove((tail, head, weight)						)
							for i in range(len(lowercase						)						):
											_lowerCamelCase  :    List[str]					=					list(edges[i]						)

							edges.sort(key=lambda lowercase						: e[2]						)
							for i in range(len(lowercase						) - 1						):
											if edges[i][2] >= edges[i + 1][2]:
															_lowerCamelCase  :    int					=					edges[i][2] + 1
							for edge in edges:
											_lowerCamelCase  :    Optional[int]					=					edge
											_lowerCamelCase  :    List[str]					=					weight
											_lowerCamelCase  :    Tuple					=					weight
			def __str__(						self						):
							_lowerCamelCase  :    Union[str, Any]					=					''
							for tail in self.adjacency:
											for head in self.adjacency[tail]:
															_lowerCamelCase  :    Dict					=					self.adjacency[head][tail]
															string += F'''{head} -> {tail} == {weight}\n'''
							return string.rstrip('\n'						)
			def       A_					(						self						):
							_lowerCamelCase  :    Tuple					=					[]
							for tail in self.adjacency:
											for head in self.adjacency[tail]:
															output.append((tail, head, self.adjacency[head][tail])						)
							return output
			def       A_					(						self						):
							return self.adjacency.keys()
			@staticmethod
			def       A_					(						lowercase=None						,   lowercase=None						):
							_lowerCamelCase  :    int					=					Graph()
							if vertices is None:
											_lowerCamelCase  :    List[str]					=					[]
							if edges is None:
											_lowerCamelCase  :    Tuple					=					[]
							for vertex in vertices:
											g.add_vertex(lowercase						)
							for edge in edges:
											g.add_edge(*lowercase						)
							return g






			class lowerCAmelCase__			:






						'''simple docstring'''



						def __init__(						self						):
										_lowerCamelCase  :    Dict					=					{}
										_lowerCamelCase  :    List[str]					=					{}
						def __len__(						self						):
										return len(self.parent						)
						def       A_					(						self						,   lowercase						):
										if item in self.parent:
														return self.find(lowercase						)

										_lowerCamelCase  :    List[Any]					=					item
										_lowerCamelCase  :    Optional[Any]					=					0
										return item
						def       A_					(						self						,   lowercase						):
										if item not in self.parent:
														return self.make_set(lowercase						)
										if item != self.parent[item]:
														_lowerCamelCase  :    List[Any]					=					self.find(self.parent[item]						)
										return self.parent[item]






						def       A_					(						self						,   lowercase						,   lowercase						):
										_lowerCamelCase  :    Union[str, Any]					=					self.find(lowercase						)
										_lowerCamelCase  :    int					=					self.find(lowercase						)

										if roota == roota:
														return roota

										if self.rank[roota] > self.rank[roota]:
														_lowerCamelCase  :    int					=					roota
														return roota

										if self.rank[roota] < self.rank[roota]:
														_lowerCamelCase  :    Optional[int]					=					roota
														return roota

										if self.rank[roota] == self.rank[roota]:
														self.rank[roota] += 1
														_lowerCamelCase  :    Optional[Any]					=					roota
														return roota
										return None

			@staticmethod
			def       A_					(						lowercase						):
							_lowerCamelCase  :    Optional[Any]					=					graph.num_vertices

							_lowerCamelCase  :    Any					=					Graph.UnionFind()
							_lowerCamelCase  :    List[Any]					=					[]
							while num_components > 1:
											_lowerCamelCase  :    int					=					{}
											for vertex in graph.get_vertices():
															_lowerCamelCase  :    Union[str, Any]					=					-1

											_lowerCamelCase  :    Optional[int]					=					graph.get_edges()
											for edge in edges:
															_lowerCamelCase  :    Optional[int]					=					edge
															edges.remove((tail, head, weight)						)
											for edge in edges:
															_lowerCamelCase  :    Any					=					edge
															_lowerCamelCase  :    Optional[Any]					=					union_find.find(lowercase						)
															_lowerCamelCase  :    List[str]					=					union_find.find(lowercase						)
															if seta != seta:
																			if cheap_edge[seta] == -1 or cheap_edge[seta][2] > weight:
																							_lowerCamelCase  :    List[Any]					=					[head, tail, weight]

																			if cheap_edge[seta] == -1 or cheap_edge[seta][2] > weight:
																							_lowerCamelCase  :    Dict					=					[head, tail, weight]
											for vertex in cheap_edge:
															if cheap_edge[vertex] != -1:
																			_lowerCamelCase  :    List[Any]					=					cheap_edge[vertex]
																			if union_find.find(lowercase						) != union_find.find(lowercase						):
																							union_find.union(lowercase						,   lowercase						)
																							mst_edges.append(cheap_edge[vertex]						)
																							_lowerCamelCase  :    List[str]					=					num_components - 1
							_lowerCamelCase  :    Any					=					Graph.build(edges=lowercase						)
							return mst









"""simple docstring"""






import copy
import os

import cva
import numpy as np
from matplotlib import pyplot as plt






class lowerCAmelCase__			:






			'''simple docstring'''



			def __init__(						self						):
							_lowerCamelCase  :    Tuple					=					''
							_lowerCamelCase  :    Any					=					''
							_lowerCamelCase  :    List[Any]					=					[]
							_lowerCamelCase  :    Tuple					=					0
							_lowerCamelCase  :    Dict					=					256
							_lowerCamelCase  :    Optional[Any]					=					0
							_lowerCamelCase  :    List[Any]					=					0
							_lowerCamelCase  :    int					=					0
							_lowerCamelCase  :    Dict					=					0
			def       A_					(						self						,   lowercase						):
							_lowerCamelCase  :    Any					=					cva.imread(lowercase						,   0						)
							_lowerCamelCase  :    Optional[int]					=					copy.deepcopy(self.img						)
							_lowerCamelCase,				_lowerCamelCase,				_lowerCamelCase  :    List[str]					=					plt.hist(self.img.ravel()						,   256						,   [0, 256]						,   label='x'						)
							_lowerCamelCase  :    Optional[int]					=					np.sum(lowercase						)
							for i in range(len(lowercase						)						):
											_lowerCamelCase  :    List[Any]					=					x[i] / self.k
											self.sk += prk
											_lowerCamelCase  :    int					=					(self.L - 1) * self.sk
											if self.rem != 0:
															_lowerCamelCase  :    Union[str, Any]					=					int(last % last						)
											_lowerCamelCase  :    int					=					int(last + 1 if self.rem >= 0.5 else last						)
											self.last_list.append(lowercase						)
											_lowerCamelCase  :    List[str]					=					int(np.ma.count(self.img						) / self.img[1].size						)
											_lowerCamelCase  :    int					=					self.img[1].size
							for i in range(self.number_of_cols						):
											for j in range(self.number_of_rows						):
															_lowerCamelCase  :    Optional[Any]					=					self.img[j][i]
															if num != self.last_list[num]:
																			_lowerCamelCase  :    Any					=					self.last_list[num]
							cva.imwrite('output_data/output.jpg'						,   self.img						)
			def       A_					(						self						):
							plt.hist(self.img.ravel()						,   256						,   [0, 256]						)






			def       A_					(						self						):
							cva.imshow('Output-Image'						,   self.img						)
							cva.imshow('Input-Image'						,   self.original_image						)
							cva.waitKey(5000						)
							cva.destroyAllWindows()


if __name__ == "__main__":
			lowercase__  		=		os.path.join(os.path.basename(__file__), """image_data/input.jpg""")
			lowercase__  		=		ConstantStretch()
			stretcher.stretch(file_path)
			stretcher.plot_histogram()
			stretcher.show_image()