
from __future__ import annotations

import os
from collections.abc import Mapping

lowercase        =  tuple[int, int]





class       __A:

					def __init__(	self					:     Optional[Any]   ,					__UpperCamelCase					:     set[int]   ,					__UpperCamelCase					:     Mapping[EdgeT, int]   ):
												lowerCamelCase_							  =					vertices
												lowerCamelCase_							  =					{
												    (min(__UpperCamelCase   ), max(__UpperCamelCase   )): weight for edge, weight in edges.items()
												}

					def    lowercase__      (	self					:     Union[str, Any]   ,					__UpperCamelCase					:     EdgeT   ,					__UpperCamelCase					:     int   ):
												self.vertices.add(edge[0]   )
												self.vertices.add(edge[1]   )
												lowerCamelCase_							  =					weight



					def    lowercase__      (	self					:     List[Any]   ):
												lowerCamelCase_							  =					Graph({min(self.vertices   )}   ,					{}   )
												lowerCamelCase_							  =					42
												lowerCamelCase_							  =					42
												lowerCamelCase_							  =					42
												lowerCamelCase_							  =					42

												while len(subgraph.vertices   ) < len(self.vertices   ):
																			lowerCamelCase_							  =					max(self.edges.values()   ) + 1
																			for edge, weight in self.edges.items():
																										if (edge[0] in subgraph.vertices) ^ (edge[1] in subgraph.vertices):
																																	if weight < min_weight:
																																								lowerCamelCase_							  =					edge
																																								lowerCamelCase_							  =					weight

																			subgraph.add_edge(__UpperCamelCase   ,					__UpperCamelCase   )

												return subgraph



def      __lowerCAmelCase						(							UpperCAmelCase__				:      str = "p107_network.txt"       )  ->    int:
							lowerCamelCase_							  =					os.path.abspath(os.path.dirname(UpperCAmelCase__       )       )
							lowerCamelCase_							  =					os.path.join(UpperCAmelCase__			,				UpperCAmelCase__       )
							lowerCamelCase_							  =					{}
							lowerCamelCase_							  =					42
							lowerCamelCase_							  =					42
							lowerCamelCase_							  =					42

							with open(UpperCAmelCase__       ) as f:
														lowerCamelCase_							  =					f.read().strip().split("""\n"""       )

							lowerCamelCase_							  =					[line.split(""","""       ) for line in data]

							for edgea in range(1			,				len(UpperCAmelCase__       )       ):
														for edgea in range(UpperCAmelCase__       ):
																					if adjaceny_matrix[edgea][edgea] != "-":
																												lowerCamelCase_							  =					int(adjaceny_matrix[edgea][edgea]       )

							lowerCamelCase_							  =					Graph(set(range(len(UpperCAmelCase__       )       )       )			,				UpperCAmelCase__       )

							lowerCamelCase_							  =					graph.prims_algorithm()

							lowerCamelCase_							  =					sum(graph.edges.values()       )
							lowerCamelCase_							  =					sum(subgraph.edges.values()       )

							return initial_total - optimal_total


if __name__ == "__main__":
		print(F"""{solution() = }""")







from abc import ABC, abstractmethod
from argparse import ArgumentParser





class       __A(				UpperCAmelCase       ):

					@staticmethod
					@abstractmethod
					def    lowercase__      (	__UpperCamelCase					:     ArgumentParser   ):
												raise NotImplementedError()



					@abstractmethod
					def    lowercase__      (	self					:     Any   ):
												raise NotImplementedError()





