






'''simple docstring'''







import os
import string
import sys


_A	:			Optional[Any]         =1 << 8

_A	:			Union[str, Any]         ={
    '''tab''': ord('''\t'''),
    '''newline''': ord('''\r'''),
    '''esc''': 27,
    '''up''': 65 + ARROW_KEY_FLAG,
    '''down''': 66 + ARROW_KEY_FLAG,
    '''right''': 67 + ARROW_KEY_FLAG,
    '''left''': 68 + ARROW_KEY_FLAG,
    '''mod_int''': 91,
    '''undefined''': sys.maxsize,
    '''interrupt''': 3,
    '''insert''': 50,
    '''delete''': 51,
    '''pg_up''': 53,
    '''pg_down''': 54,
}

_A	:			Optional[Any]         =KEYMAP['''up''']
_A	:			Optional[Any]         =KEYMAP['''left''']

if sys.platform == "win32":
			_A	:			List[str]         =[]
			_A	:			Union[str, Any]         ={
			    b'''\xe0H''': KEYMAP['''up'''] - ARROW_KEY_FLAG,
			    b'''\x00H''': KEYMAP['''up'''] - ARROW_KEY_FLAG,
			    b'''\xe0P''': KEYMAP['''down'''] - ARROW_KEY_FLAG,
			    b'''\x00P''': KEYMAP['''down'''] - ARROW_KEY_FLAG,
			    b'''\xe0M''': KEYMAP['''right'''] - ARROW_KEY_FLAG,
			    b'''\x00M''': KEYMAP['''right'''] - ARROW_KEY_FLAG,
			    b'''\xe0K''': KEYMAP['''left'''] - ARROW_KEY_FLAG,
			    b'''\x00K''': KEYMAP['''left'''] - ARROW_KEY_FLAG,
			}

for i in range(10):
			_A	:			List[str]         =ord(str(i))





def  SCREAMING_SNAKE_CASE_       ()      ->       int:
							if os.name == "nt":
														import msvcrt

														lowerCamelCase__					:	str         =       """mbcs"""
														# Flush the keyboard buffer
														while msvcrt.kbhit():
																					msvcrt.getch()
														if len(UpperCamelCase      ) == 0:
																					# Read the keystroke
																					lowerCamelCase__					:	List[Any]         =       msvcrt.getch()

																					# If it is a prefix char, get second part
																					if ch in (b"\x00", b"\xe0"):
																												lowerCamelCase__					:	Optional[int]         =       ch + msvcrt.getch()
																												# Translate actual Win chars to bullet char types
																												try:
																																			lowerCamelCase__					:	Tuple         =       chr(WIN_KEYMAP[cha]      )
																																			WIN_CH_BUFFER.append(chr(KEYMAP["""mod_int"""]      )      )
																																			WIN_CH_BUFFER.append(UpperCamelCase      )
																																			if ord(UpperCamelCase      ) in (
																																			    KEYMAP["insert"] - 1 << 9,
																																			    KEYMAP["delete"] - 1 << 9,
																																			    KEYMAP["pg_up"] - 1 << 9,
																																			    KEYMAP["pg_down"] - 1 << 9,
																																			):
																																										WIN_CH_BUFFER.append(chr(126      )      )
																																			lowerCamelCase__					:	str         =       chr(KEYMAP["""esc"""]      )
																												except KeyError:
																																			lowerCamelCase__					:	List[str]         =       cha[1]
																					else:
																												lowerCamelCase__					:	Any         =       ch.decode(UpperCamelCase      )
														else:
																					lowerCamelCase__					:	str         =       WIN_CH_BUFFER.pop(0      )
							elif os.name == "posix":
														import termios
														import tty

														lowerCamelCase__					:	List[Any]         =       sys.stdin.fileno()
														lowerCamelCase__					:	Any         =       termios.tcgetattr(UpperCamelCase      )
														try:
																					tty.setraw(UpperCamelCase      )
																					lowerCamelCase__					:	Dict         =       sys.stdin.read(1      )
														finally:
																					termios.tcsetattr(UpperCamelCase				,			termios.TCSADRAIN				,			UpperCamelCase      )
							return ch





def  SCREAMING_SNAKE_CASE_       ()      ->       Optional[int]:
							lowerCamelCase__					:	Dict         =       get_raw_chars()
							if ord(UpperCamelCase      ) in [KEYMAP["interrupt"], KEYMAP["newline"]]:
														return char

							elif ord(UpperCamelCase      ) == KEYMAP["esc"]:
														lowerCamelCase__					:	List[str]         =       get_raw_chars()
														if ord(UpperCamelCase      ) == KEYMAP["mod_int"]:
																					lowerCamelCase__					:	str         =       get_raw_chars()
																					if ord(UpperCamelCase      ) >= KEYMAP["arrow_begin"] - ARROW_KEY_FLAG and ord(UpperCamelCase      ) <= KEYMAP["arrow_end"] - ARROW_KEY_FLAG:
																												return chr(ord(UpperCamelCase      ) + ARROW_KEY_FLAG      )
																					else:
																												return KEYMAP["undefined"]
														else:
																					return get_raw_chars()

							else:
														if char in string.printable:
																					return char
														else:
																					return KEYMAP["undefined"]



from __future__ import annotations

import os
from collections.abc import Mapping

_UpperCAmelCase					: Tuple      =       tuple[int, int]


class 				lowercase					:



		def __init__( self				,      A_				,      A_       )  ->					None:
				"""simple docstring"""
				UpperCamelCase		=     vertices
				UpperCamelCase		=     {
				    (min(A_       ), max(A_       )): weight for edge, weight in edges.items()
				}



		def __UpperCamelCase ( self				,      A_				,      A_       )  ->					None:
				"""simple docstring"""
				self.vertices.add(edge[0]       )
				self.vertices.add(edge[1]       )
				UpperCamelCase		=     weight



		def __UpperCamelCase ( self       )  ->					Graph:
				"""simple docstring"""
				UpperCamelCase		=     Graph({min(self.vertices       )}				,      {}       )
				UpperCamelCase		=     42
				UpperCamelCase		=     42
				UpperCamelCase		=     42
				UpperCamelCase		=     42

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

						subgraph.add_edge(A_				,      A_       )

				return subgraph






def       A       (					lowercase = "p107_network.txt" )   ->  int:
		'''simple docstring'''

		UpperCamelCase		=     os.path.abspath(os.path.dirname(lowercase ) )
		UpperCamelCase		=     os.path.join(lowercase    ,       lowercase )
		UpperCamelCase		=     {}
		UpperCamelCase		=     42
		UpperCamelCase		=     42
		UpperCamelCase		=     42

		with open(lowercase ) as f:
				UpperCamelCase		=     f.read().strip().split('\n' )

		UpperCamelCase		=     [line.split(',' ) for line in data]

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

		UpperCamelCase		=     Graph(set(range(len(lowercase ) ) )    ,       lowercase )

		UpperCamelCase		=     graph.prims_algorithm()

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

		return initial_total - optimal_total


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