
"""simple docstring"""







from __future__ import annotations

from typing import Any




class 				A__ (			_lowerCamelCase):
  pass




class 				A__ :

  def __init__(   self ,	_SCREAMING_SNAKE_CASE				):
   __lowerCAmelCase    :		Any		    =   data
   __lowerCAmelCase    :		Node | None		    =   None

  def __iter__(   self				):
   __lowerCAmelCase    :		List[str]		    =   self
   __lowerCAmelCase    :		int		    =   []
   while node:
    if node in visited:
     raise ContainsLoopError
    visited.append(_SCREAMING_SNAKE_CASE				)
    yield node.data
    __lowerCAmelCase    :		Union[str, Any]		    =   node.next_node







  @property
  def 							__lowerCamelCase							(   self				):
   try:
    list(self				)
    return False
   except ContainsLoopError:
    return True


if __name__ == "__main__":
       lowerCamelCase__           =	Node(1)
       lowerCamelCase__           =	Node(2)
       lowerCamelCase__           =	Node(3)
       lowerCamelCase__           =	Node(4)
       print(root_node.has_loop)  # False
       lowerCamelCase__           =	root_node.next_node
       print(root_node.has_loop)  # True

       lowerCamelCase__           =	Node(5)
       lowerCamelCase__           =	Node(6)
       lowerCamelCase__           =	Node(5)
       lowerCamelCase__           =	Node(6)
       print(root_node.has_loop)  # False

       lowerCamelCase__           =	Node(1)
       print(root_node.has_loop)  # False

"""simple docstring"""







from __future__ import annotations

from collections import Counter
from random import random




class 				A__ :

		def __init__(   self				):
			__lowerCAmelCase    :		Any		    =   {}

		def 							__lowerCamelCase							(   self ,	_SCREAMING_SNAKE_CASE				):
			__lowerCAmelCase    :		Dict		    =   {}

		def 							__lowerCamelCase							(   self ,	_SCREAMING_SNAKE_CASE ,	_SCREAMING_SNAKE_CASE ,	_SCREAMING_SNAKE_CASE				):
			if nodea not in self.connections:
				self.add_node(_SCREAMING_SNAKE_CASE				)
			if nodea not in self.connections:
				self.add_node(_SCREAMING_SNAKE_CASE				)
			__lowerCAmelCase    :		Optional[Any]		    =   probability

		def 							__lowerCamelCase							(   self				):
			return list(self.connections				)







		def 							__lowerCamelCase							(   self ,	_SCREAMING_SNAKE_CASE				):
			__lowerCAmelCase    :		List[str]		    =   0
			__lowerCAmelCase    :		List[Any]		    =   random()

			for dest in self.connections[node]:
				current_probability += self.connections[node][dest]
				if current_probability > random_value:
					return dest
			return ""



def 					__lowerCAmelCase       (_UpperCamelCase ,						_UpperCamelCase ,						_UpperCamelCase	):
	__lowerCAmelCase    :		Optional[Any]		    =   MarkovChainGraphUndirectedUnweighted()

	for nodea, nodea, probability in transitions:
		graph.add_transition_probability(_UpperCamelCase ,						_UpperCamelCase ,						_UpperCamelCase	)

	__lowerCAmelCase    :		str		    =   Counter(graph.get_nodes()	)
	__lowerCAmelCase    :		Tuple		    =   start

	for _ in range(_UpperCamelCase	):
		__lowerCAmelCase    :		int		    =   graph.transition(_UpperCamelCase	)
		visited[node] += 1

	return visited


if __name__ == "__main__":
							import doctest

							doctest.testmod()