


'''simple docstring'''

from __future__ import annotations

import os
from collections.abc import Mapping

lowercase__				     =		tuple[int, int]





class 						__SCREAMING_SNAKE_CASE					:






     def __init__(			self     ,							__UpperCamelCase     ,							__UpperCamelCase		)       ->    None:
          _a						=		vertices
          _a						=		{
              (min(__UpperCamelCase		), max(__UpperCamelCase		)): weight for edge, weight in edges.items()
          }






     def  a_					(			self     ,							__UpperCamelCase     ,							__UpperCamelCase		)       ->    None:
          self.vertices.add(edge[0]		)
          self.vertices.add(edge[1]		)
          _a						=		weight






     def  a_					(			self		)       ->    Graph:
          _a						=		Graph({min(self.vertices		)}     ,							{}		)
          _a						=		42
          _a						=		42
          _a						=		42
          _a						=		42

          while len(subgraph.vertices		) < len(self.vertices		):
               _a						=		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:
                              _a						=		edge
                              _a						=		weight

               subgraph.add_edge(__UpperCamelCase     ,							__UpperCamelCase		)

          return subgraph







def __UpperCamelCase   (			__lowerCamelCase		: str = "p107_network.txt"				)      ->     int:







     '''simple docstring'''






     _a						=		os.path.abspath(os.path.dirname(__lowerCamelCase				)				)
     _a						=		os.path.join(__lowerCamelCase      ,  __lowerCamelCase				)
     _a						=		{}
     _a						=		42
     _a						=		42
     _a						=		42

     with open(__lowerCamelCase				) as f:
          _a						=		f.read().strip().split("\n"				)

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

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

     _a						=		Graph(set(range(len(__lowerCamelCase				)				)				)      ,  __lowerCamelCase				)

     _a						=		graph.prims_algorithm()

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

     return initial_total - optimal_total


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





'''simple docstring'''

def __UpperCamelCase   (			__lowerCamelCase		: int = 400_0000				)      ->     int:







     '''simple docstring'''






     _a						=		[]
     _a			,			_a						=		0, 1
     while b <= n:
          if b % 2 == 0:
               even_fibs.append(__lowerCamelCase				)
          _a			,			_a						=		b, a + b
     return sum(__lowerCamelCase				)


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

